17 Best Plant Humidifiers and Buying Guide

Once you start building your indoor garden, you will see that it requires a lot of extra parts.

All of these accessories have one purpose – keeping the plants healthy and alive.

One of these must-have parts is plant humidifier.

Since plants have adapted to certain conditions, this small device can help you with mimicking those conditions at home.

This guide will cover everything you need to know about plant humidifiers.

We will answer all of your most frequent questions: how these devices work, what types are available, and the benefits of using them.

Also, we have reviewed 17 of the best plant humidifiers available online, so you can easily find the one suitable for your garden.

Buying Guide

Choosing a good plant humidifier is almost impossible if you don’t know anything about them.

Luckily for you, this guide will cover everything there is to know about humidifiers.

When you are done reading, you will have all of the needed information so you can choose the right one for your plants.

Without further ado, let’s begin!

All about humidity – what is it and do indoor plants need it?

Firstly, we should talk about the basics.

As you can conclude from the name of the device, plant humidifiers are creating humidity.

So, what is humidity? Will your plants die if there isn’t enough of it?

Humidity is the amount of evaporated water present in the air.

Besides this general description, there are two other definitions.

The first one is relative humidity. This is the amount of vapor currently present compared to the amount that air can hold in total at a given temperature.

There is also an absolute humidity which is just the water vapor in one cubic meter of air.

Viewing from the point of humidity, plants can require two different environments.

The desert environment is an environment with high temperatures and low humidity.

On the other hand, in artic growing conditions, temperature is significantly lower, but so is the humidity.

The one thing you should know is that the plants growing in higher temperatures will require higher humidity. This is just a natural process – water easily evaporates in higher temperatures, thus creating a more humid air.

So, does my plant really needs a humidifier to thrive?

Well, this depends on the type of the plant you own.

If the plant’s natural habitat is a tropical forest, like calathea or monstera, it will need a humidifier to grow. These are the growing conditions it has adapted to, so you will have to recreate them as close as possible.

Another reason a plant might need a humidifier is thin leaves. The thinner the leaves, the more water will evaporate. By keeping the air humid, you will help the plant with getting and retaining water. Anyone who owns an epiphyte is well aware of this.

Keep in mind that there are also plants that aren’t able to pick up all of the needed nutrients and water from the ground. Due to their weak root system, they are getting water from vapor, and not the ground.

In general, many plants need a humidity level of around 40% or even higher. This isn’t easy to achieve, especially if you live in area with a colder climate, so a plant humidifier is a must-have.

Before you start looking for a plant humidifier, get to know the plant’s preferences. This way, you will know exactly which type will work the best!

Getting the most out of the humidifier – where to place it, when and how often to use it

If you are not using the humidifier properly, you won’t notice all the benefits of owning it.

Plants will suffer from low humidity, and you might feel like you’ve just wasted a ton of money on a device that is not doing what it is supposed to.

However, you are probably not seeing the results because you aren’t using it properly.

Owning a plant humidifier isn’t enough – you should also know where is the best place for it and when you should turn it on.

Pick the right spot

A humidifier shouldn’t be placed too near or too far from a plant because each spot has its major disadvantages.

If it is placed too far, the air around the plant probably won’t be as humid as you may expect it to be.

Consequently, you will see that the leaves have started to change color due to low humidity and the plant will start dying.

Placing it too near can also cause damage to the plant.

Just because it is close to the plant, doesn’t mean that it is getting enough humidity.

The fan inside humidifier could be taking away moisture that the plant needs, so it leaves the air around a plant dry while keeping the air in the other parts humid.

When it comes to choosing the right spot, it is best to place it a few feet away from the garden. Typically, the recommended distance between the humidifier and the plant is up to 6 feet, but at least 3 feet away.

Frequency of use

Now, let’s answer these very important questions.

Firstly, you should always know the plant’s preferences, because each plant has a unique criterion that has to be met.

Of course, there are some general requirements for most indoor plants, and we will cover them in this part.

Most indoor gardeners are watering their plants in the morning. Checking on your plants and watering is a part of a morning routine.

This is a great time to turn on the humidifier also!

When high humidity is created during the day, there is enough time for it to evaporate until the night.

Once the sun sets, you shouldn’t turn on the humidifier. During night, when there is no sunlight and the plant is resting, high humidity can be quite damaging.

A humidifier that is working during the night might cause some plant diseases.

When it comes to the frequency of using the humidifier, it depends on the plant.

Some types require more, some less humid air. However, no matter which plant you own, you should turn humidifier on every morning and ensure that the humidity level is high enough to boost the growth.

If you own a specie that requires a humidity level of about 60-70%, you can use it more frequently throughout the day.

A few things to consider before purchasing a humidifier

So, before you start scrolling through Amazon and looking at a bunch of different models, there are things you should take into consideration.

Even the best model won’t work properly if you aren’t aware of a few things.

Here is everything you need to know before buying a humidifier:

1. Measure the room

The size of the room is of the utmost importance!

You can’t live in a castle and place a small humidifier hoping it will do the trick.

The bigger the room is, the bigger device you will need.

So, before you click on that “Add to cart” button, measure the room where you intend to place it.

 For small rooms, up to three-hundred square feet, a small humidifier will work just fine. It creates a humidity level high enough to keep alive even the most demanding plants.

When it comes to rooms that are up to 450 square feet large, the medium-size device is the best choice.

Any room above five-hundred square feet requires a large humidifier.

This is the only way to maintain the proper humidity level, so grab that tape measure and then visit Amazon.

2. Type of humidifier

If you don’t know which type you exactly need, you will probably buy the wrong one.

We will talk more about different types in this guide later, let’s just quickly cover the importance of knowing the right one for your garden.

Some plants will require extra heat, while it might be damaging to others. If you own the first type of plant, that goes for a warm mist.

There are also cold mist humidifiers, and even though they have several advantages over warm mist type, they require more energy to run.

Also, you should know that there are mobile humidifiers – you can easily move them to another room if needed.

Of course, do not forget about the size – you can choose between the small, medium and large type, so find the one that fits your room the best!

3. Noise

These machines aren’t as silent as you may think.

If you are a light sleeper and keep the humidifier close to your bedroom, you might have trouble falling asleep at night.

When choosing humidifier, always check the level of noise it creates.

Even if the garden is far away from your bedroom, the humidifier will make noise that may disturb you while trying to complete the daily chores.

4. The size of a water tank

Humidifiers are turning water into mist thus raising humidity of the air.

When you are choosing the humidifier, check the size of the water tank.

These devices need refilling, so if you go for a one with a bigger tank, you won’t have to do this job that often.

5. Additional features

There are a variety of features a humidifier can have.

The most important two are working time and design.

When it comes to the working time, find the one that can work for 12 hours straight. This is the minimum working time and the best ones have a run time of 24 hours.

For design, most gardeners want a simple and modern design.

They are looking for one that has a reminder for refilling so that they don’t have to constantly check the water level.

Also, many come with a timer for shutting down.

Touchscreen or nightlight are other things you should consider when buying.

6. Extra chores

These devices will require your attention.

If you aren’t ready to find an extra 15 to 30 minutes each week to take care of the humidifier, you should look for a different way to increase the humidity of your room.

Humidifiers need regular cleaning because bacteria can easily develop in different parts.

Also, some filters require additional attention.

Pros and Cons of Humidifiers

Just like any other device, this one has plenty of both pros and cons.

Advantages of plant humidifiers

Firstly, let’s start with the benefits.

Humidifiers won’t help only plants in your garden to thrive – they have plenty of good effects on the environment in your home also.

No more viruses, bacteria and other diseases

Once you start using a humidifier, you will notice that you aren’t getting sick that easily.

This is because these microorganisms can’t survive for too long in the air that is too humid.

Also, certain plant diseases, such as fungi, can easily be cured – in high humidity, recovery of the plant is boosted.

Vibrant leaves

Color of the leaves isn’t only determined by the amount of sunlight or water the plant is getting.

Humidity is also playing a major role!

Thanks to the humid air, the leaves are smoother and full of color. So, if you notice any yellow spots or just dry leaves, increase the humidity to heal them up.

Increased temperature of the air

Most of the indoor plants prefer warmer temperatures.

Ideally, temperature should be kept at about 20 Celsius degrees.

Gardeners are typically using heaters to keep the temperature constant, but with a humidifier, you can throw that heater away.

Since the moist air is warmer, there is no need to warm it up additionally with a heater.

Disadvantages of owning a humidifier

Extra work

This device will need your attention.

Even though it does work on its own (turning on and off for example), it doesn’t have an option for self-cleaning, which means that you will have to do this part on your own.

If not cleaned regularly, bacteria or other organisms like fungi may start growing inside. Water tanks and filters are the most susceptible to these problems.

Cleaning the humidifier should be a part of your cleaning routine, so add it to the checklist.

Additional humidity

Humidifiers without timers might create too much humidity, which can damage your garden.

The plants might struggle with different infections.

If you don’t own a type that will regulate the level of humidity on their own, make sure that you are doing it yourself, frequently.

White dust

Gardeners often use water that is full of different minerals which will later end on the plant’s leaves.

Humidifiers can’t get rid of minerals, so they are spreading them as white dust that is quite harmful to plants.

It will clog pores through which plant breathes.

As the amount of dust on the leaves grow, the leaves will start slowly to dry out.

The only way to prevent leaves from drying is by frequently cleaning them with a cloth which is just extra work in your garden.

Types of Plant Humidifiers

Now, let’s talk into details about different types of humidifiers.

By knowing each type, you will easily decide which one you need.

There are four basic types of humidifiers: warm mist, cold mist, ultrasonic and evaporative.

1. Warm mist

Once you start scrolling through different products, you will notice that most of the models are warm mist humidifiers.

This is one of the most popular types.

So, how do they work?

Water heats inside the humidifier and steam is created.

Then, vapor spreads in the air thus increasing humidity.

One of the advantages of using these humidifiers is that the vapor is purified.

However, if the plants can’t stand high heats, you should avoid buying this type.

2. Cold mist

This is another quite common type.

If you were wondering which type is better – cool or warm mist – there aren’t many differences.

These types have almost the same characteristics.

The only difference is that the cold mist humidifiers aren’t heating the water – they are spreading the moisture and slightly bringing down the temperature of the room.

If you need a humidifier suitable for use during the entire year, choose this type!

3. Evaporative

Are you familiar with swamp coolers?

Evaporative humidifiers operate almost the same.

Water is placed in a tank and through a wick pulled out.

Then a fan turns water into vapor and spreads it in the air.

4. Ultrasonic

If you want the most modern humidifier, ultrasonic is the best choice.

The vapor created by these humidifiers is high-quality – the particles are super small and light.

Ultrasonic humidifiers have a vibrating diaphragm at the bottom of a water tank.

When it is turned on, the vibration is transferring E to molecules of water thus boosting the evaporation.

Product Reviews

As said, we have a few recommendations.

Now that you are familiar with what humidifiers are, how they work, and the types available, making a choice will be much easier.

These products are our top picks, so make sure to check them all.

Let’s start!

1. Premium Ultrasonic Cool & Warm Mist Humidifier

Premium Ultrasonic Cool & Warm Mist Humidifier


  • 4L water tank
  • Ceramic filter
  • Suitable for rooms of up to 500 square feet
  • Work time of 30 hours
  • Three humidity modes
Chech it on Amazon!


If you can’t decide between a humidifier with a cold or warm mist, why not get the one that has both?

Cold mist is great during the colder months, while the warm mist provides enough humidity during the rest of the year.

Also, if you own different types of plants, you will have a machine suitable for all!

This Hupro humidifier is an ultrasonic humidifier which means that the water will be turned into vapor much faster.

There is also a lamp for purifying water and keeping it fresh.

It features a large water tank and top filling. Also, it is removable and comes with a handle, so refilling can be done easily.

Thanks to its large capacity, even if you are using the warm mist, it won’t need frequent refilling.

The top of the humidifier is designed in a way to prevent any leaks, and cleaning can be done in just a few minutes.

Filters are made of ceramic – the material is super durable and thanks to active carbon with mineral pellets in the filter, you won’t be spending any extra money on new filters.

This model has 30 hours of working time and it is a large size humidifier, suitable for bigger rooms.

It is also super silent – even if it is working during the night, you won’t even notice it.

There is a sleep timer, as well, that turns the lights off and shuts the humidifier down after 12 hours of working.

If you don’t refill it, it will stay turned off to prevent any damage.

When it comes to humidity control, it offers three different types. There is an auto mode, so the machine is controlling the humidity level on its own.

Other humidity modes are constant humidity and five-level speed that allow you to set the desired humidity level.

All of the settings can be easily controlled by a remote.

If you adore the smell of essential oils, just switch to the warm mist and place a few drops of essential oil in a separate tank.

Your plants will get enough moisture, and you will enjoy fresh and clean air.


  • Easy to clean and refill
  • Easy to switch between different modes
  • 12-hour timer saves energy
  • Has a separate tank for essential oils
  • Keeps the water and air fresh


  • The warm mist might cause some leaking

2. DCMEKA Desk Humidifier

DCMEKA Desk Humidifier


  • 3L water tank
  • 10-hour work time
  • 6.6 feet USB cable
  • Two mist modes
  • Features a night light
Chech it on Amazon!


If you were looking for a good cold mist humidifier, check out this one.

This DCMEKA humidifier is great for smaller rooms – thanks to its size, you can place it in any corner, desk, or shelf.

It is also great for offices and other smaller spaces.

The humidifier is an ultrasonic humidifier, with a cold mist.

By pressing only one button, you can easily switch between two modes: one press is for a continuous mist and the second one will turn on an intermittent misting.

The same button controls the lights, also. Just press and hold it for a bit longer and it will turn on the lights.

When it comes to the water tank and refilling, this model has a built-in water tank that can’t be removed.

However, thanks to the top filling, it can still be done easily.

Keep in mind that due the size of the tank, it isn’t suitable for large spaces.

If the device uses up all water, it will automatically turn off. The built-in 4-hour timer is making sure it doesn’t use too much energy when the tank is empty and it will shut down the humidifier.

After refilling, just plug in the USB cable, and choose the preferred mode.

Since it is an ultrasonic humidifier, it is extremely quiet. If you aren’t using it in your indoor garden, you can move it to your bedroom.

The humidity is great for people struggling with allergies and congestion.

Another thing that you will love is a small pot on the lid of the water tank.

It is great for growing small plants that need that extra boost for growing and development.

Essential oils can be added into this pot, so the humidifier can be used as a diffuser as well.


  • Easy to use
  • One button for all controls
  • Easy to refill and clean
  • Super quiet
  • Has a small plant pot


  • If not cleaned regularly, the mold will develop inside the water tank

3. HUMIDIMASTER 6L Ultrasonic Humidifier with Top-Fill

HUMIDIMASTER 6L Ultrasonic Humidifier with Top-Fill


  • 6L water tank
  • 48-hour work time
  • 360-degree nozzles
  • 3 operating modes
  • LED display and remote control
Chech it on Amazon!


This TBI Pro humidifier isn’t only beneficial for your garden, but for your health as well.

Firstly, let’s talk about the design of the machine.

It comes in black color and features a modern design.

The water tank has an outstanding 6-liter capacity, which makes it ideal for larger indoor gardens and rooms. The tank this bag can cover the area of 750 square feet easily.

HUMIDIMASTER features a top-fill design. There is no need to detach the tank or disassemble the machine when it needs refilling.

All that you need to do is remove the lid and add water. Thanks to the wide opening, you don’t have to worry about spilling the water.

Also, this design makes cleaning super easy as well. You won’t need a manual – everything is pretty self-explanatory.

Because this is an ultrasonic humidifier, the water is turned into a mist with help from vibrations.

When it starts evaporating, it goes through a filter that will decarbonize it. Any salt present in water, will stick to the filter and stopped from spreading around. You won’t have to worry about white dust or breathing in any impurities.

Also, there is a medical stone mist that additionally purifies water and helps with delivering clean mist.

This humidifier has 360-degree rotatable nozzles – the mist is equally delivered to all parts of the room.

On the LED display, you can monitor the humidity level, the temperature of the room, water level and operating mode.

There are three mist modes to choose from: low, medium and high, and on a touchscreen or with a remote, you can switch between them and choose the mode that suits your garden the best.

Besides these modes, there is a sleep mode as well. You can set the time of activation, and the humidifier will switch to a silent mode and shut down all lights.

Also, there is a timer for shutting down the entire machine. Just set the desired hour, and the machine will turn off.

If you are struggling with insomnia, allergies, or dry skin, you will benefit from owning this TBI Pro humidifier as well. The higher humidity and clean air can help you battle these problems.


  • Easy to use
  • One button for all controls
  • Perfect for large gardens and rooms
  • Easy to clean and add water
  • Medical stone mist for better purification


  • Every time you turn it on, you need to adjust the parameters

4. Miroco Cool Mist Humidifier

Miroco Cool Mist Humidifier


  • 6L water tank
  • Up to 60 hours of work time
  • 26dB of noise
  • Rotatable nozzles and adjustable mist
  • Suitable for rooms up to 430 square feet
Chech it on Amazon!


This Miroco humidifier is one of the most silent models available online.

It features silent operation and creates noise that is less than 26dB.

Also, it has an amazing design – the humidifier is super lightweight and easy to move around.

Thanks to the built-in handle, you can just grab it and move it from one room to the other.

The water inlet is wide, so you can refill the tank without any hassle and any spilling. Because there is enough room to place the hand inside the tank, it won’t need any dissembling.

When it comes to the capacity, the Miroco humidifier features a 6-liter water tank.

Thanks to the large tank, it can operate for up to 60 hours – for almost three days you won’t need to worry about refilling the tank.

There are also rotatable nozzles so you can adjust the direction of the mist as you want.

Another thing that can be adjusted to fit your needs is the mist – you can boost the evaporation process and slow it down.

This makes controlling the humidity level of the room super easy and each plant will get exactly the amount of moisture it needs to thrive.

The humidifier has a warning for low water level as well – when the indicator starts shinning red, it is time to add more water. This alarm is also preventing the machine from overheating.

Maintaining the machine is super easy. The water inlet is wide, so you can refill the tank without any hassle and any spilling. There is enough room to place a whole hand inside the tank, so it won’t need any dissembling.

The brush and dustproof sponge will help you reach every corner of the tank and other parts – they are great extras that will help you clean the base properly.


  • Super silent which makes it great for keeping in any room
  • Thanks to the brush and sponge, it is quite easy to keep clean
  • It automatically stops misting when the water level is low and prevents overheating
  • Great work time


  • The mist can get trapped in the base

5. Homech Cool Mist Humidifier

Homech Cool Mist Humidifier


  • 4L water tank
  • 2 feet height of the mist
  • Suitable for rooms up to 430 square feet
  • Work time of 50 hours
  • Less than 26dB of noise
Chech it on Amazon!


This is another humidifier with a smart and modern design.

If you were amazed by the previous model, but find it a bit too large, check out this one!

Firstly, let’s talk about the outstanding capacity of the water tank. Even though it is smaller than other humidifiers we talk about so far, it still has a great capacity.

Up to 4 liters of water can be added to the tank and it allows work time up to 50 hours.

Because the tank is so big, you can go a few days without refilling it or even checking up on the water level.

The work time can be increased additionally by properly adjusting the mist.

Also, it has rotatable nozzles so every part of the room is entirely covered.

Thanks to the 2 feet mist height, even the air that is higher is moist as the lower layers. Your plants will benefit a lot from this even air humidity!

The water inlet is quite large and you won’t struggle with refilling or cleaning the tank. All of this work can be done effortlessly.

Since the humidifier does not use any filters, you also won’t have to worry about the extra chores – besides cleaning the tank once a week, it doesn’t need any additional maintenance.

Speaking of incredible design, this Homech humidifier has a handle that makes moving it around super easy.

The water gauge is entirely transparent – you can easily track the level of water in it. If you do forget to check it, an alarm will remind you to add water when the level is too low.

It will also stop with misting, so the machine doesn’t overheat.

Whenever you turn off the device, the dry and clean tube will make sure that all no water is left in the tube – any water left will be dispersed in air in three minutes after shutting down.

If you want to use a humidifier during the night, there are soft, built-in LED lights. These won’t disturb your sleep and can be turned off just by pressing one button.

Also, because this is another ultrasonic humidifier, it is super quiet and makes less than 26dB of noise.


  • Lightweight and portable
  • Noiseless
  • Easy to clean
  • Spreads the moisture evenly
  • No filters and no extra work


  • If not cleaned regularly, it might emit release a weird smell

6. Magictec 2.5L Bedroom Essential Humidifier Diffuser

Magictec 2.5L Bedroom Essential Humidifier Diffuser


  • Made of durable ABS material
  • Less than 30dB of noise
  • 2.5L water tank
  • Full-circle rotatable nozzles
  • Ultrasonic technology
Chech it on Amazon!


If you are using the humidifier in other rooms besides the garden than you should check out this model by Magitec.

This humidifier has everything you want – outstanding design and even better characteristics.

Let’s start with the design.

This cool-mist humidifier is made of ABS – it is a high-quality material that ensures the longevity of the product. Also, it is super easy to clean – all you need is a clean cloth and water.

The design is modern and it will complement any room and blend with the other devices you own.

Also, it is one of the smaller humidifiers, so it can fit on any surface.

This Magitec humidifier has a water tank of 2.5 liters. Even though it can’t work for a few days straight, it will still maintain the high humidity level for 24 hours straight.

When your plants aren’t using it during the night, you can move it to your bedroom and enjoy fresh air throughout the night.

Since it is an ultrasonic humidifier, it is super silent – less than 30dB are produced, so your sleep won’t be interrupted by irritating sounds.

The tank is entirely see-through, so you can easily check the water level at any time. If you forget to refill the tank, there is an automatic turn-off that will protect the machine from overheating.

When you add more water, you can turn the humidifier on again.

Another amazing thing about this humidifier is rotatable nozzles. They can rotate full-circle and keep the air in the entire room evenly humid.

Also, you can adjust the mist when needed.

Since the different types of plants require different levels of humidity, by pressing only one button, you can set the needed mist flow.

The dial knob is there to help you adjust the humidity level and change it when required.

This humidifier isn’t only beneficial for the plants, but for the entire family – you can forget about allergies or other problems caused by dry air, such as dry skin or chapped lips.

If you are struggling with insomnia, just place the humidifier in your bedroom and enjoy a good night’s sleep.


  • Silent and suitable for use during the night
  • Automatic power-off when the water level is too low
  • Work time of 24 hours
  • Rotatable nozzles and adjustable mist maintain the constant air humidity
  • Easy to use


  • Refilling is a bit difficult because it requires the dissembling of the machine

7. Elechomes Warm and Cool Mist Humidifiers

Elechomes Warm and Cool Mist Humidifiers


  • 5.5L water tank
  • 600ml/h max mist flow
  • Suitable for rooms up to 755 square feet
  • Work time of 40 hours
  • Less than 32dB of noise
Chech it on Amazon!


This is another model that offers both cold and warm mist, so it adjusts to the needs of your family and garden.

With the warm mist, you can forget about the clogged sinuses and problems caused by allergies. The cold mist will benefit your plants that just need fresh air and a lot of moisture.

This Elechomes humidifier features a modern and sleek design. Thanks to the white color, it will look great in any room.

Also, the design allows easy use. It is filled from the top without the need for any dissembling, so all you have to do is remove the lid and pour water.

The top-fill design ensures no spilling or leaking, so there is no extra work around the humidifier.

This model has a tank capacity of 5.5 liters. It is great for larger indoor gardens or any larger indoor space.

The large water tank is saving time on refilling – the work time is up to 40 hours, so you won’t have to check the water level frequently.

Adjustable mist flow along with the rotatable nozzles is making sure that the humidity level of the room is kept constant.

There are 3 levels of mist flow to choose from, and the maximum flow is 600ml per hour. This high flow is ensuring the humidity of 60% – just what your tropical plants need.

Even though many indoor gardeners avoid the humidifiers with filters, this model has a type that is durable and super easy to replace. It effectively removes the white dust, so the plants are getting the fresh mist.

 There is a sleep mode as well – because many people use humidifiers to battle insomnia, a screen-off feature is making sure you aren’t disturbed by any lights.

Furthermore, with the ultrasonic technology, it creates up to 32dB of noise – you won’t even notice that it is working. Your sleep won’t be interrupted during the night and you won’t be distracted by different sounds during the day.


  • Silent and suitable for bedroom
  • Includes remote for easier use
  • Sleep mode for better sleep quality
  • Easy to refill, without any leaking
  • Outstanding work time, ideal for bigger rooms


  • The cleaning is a bit challenging because of the many unreachable places

8. Homasy 2.2L Quiet Ultrasonic Bedroom

Homasy 2.2L Quiet Ultrasonic Bedroom


  • 2.2L water tank
  • 28dB of noise
  • 24 hours of work time
  • Suitable for rooms up to 270 square feet
  • 180 ml/h mist output
Chech it on Amazon!


Large humidifiers aren’t suitable for everyone, because too high humidity can cause damage to the plants.

If you own a smaller indoor garden, then you should check out this Homasy Ultrasonic humidifier.

This is a great choice for everyone that has a smaller indoor garden or need a humidifier for just a few plants in the house.

Firstly, let’s talk about the simplicity of this device.

Since it is small, it doesn’t have many extra pieces and you will set it up in just a few minutes.

Moreover, refilling is also done easily.

The tank is placed on top of the base and whenever you need to add more water, just remove it from the base and take off the cap of the tank.

Once it is full, just place it back on the base.

The design is additionally improved with the handle on the base – this makes moving the tank from one room to the other much easier.

Also, it has a large opening which makes cleaning the device much more convenient. Besides this large opening, the brushes for cleaning are included so you can easily reach all of the spots.

The water tank has a capacity of 2.2 liters. It might seem like too little at first, but it still offers 24 hours of work time.

There are rotatable nozzles as well, so every corner of the room gets an equal amount of mist.

Not all plants require the same level of humidity. That is why this humidifier has a dial knob – it allows you to set the flow of the mist to your preferences.

Thanks to this adaptable mist output, the humidity level can be set to up 60% – the ideal environment for most indoor plants.

This humidifier isn’t only great for plants, but people as well.

If you are struggling with insomnia, sore throat, or any breathing problems, sleeping in a room with a humidifier might resolve these issues.

It features a super silent sleep mode, so the noise isn’t constantly waking you up.

Thanks to the comfortable environment it creates, you will wake up each day feeling refreshed and your breathing problems will be gone.


  • Easy to refill
  • Easy to maintain
  • Auto power-off for low water level
  • Features a silent mode, super quiet
  • Features a dial knob for adjusting the mist output


  • A high mist output significantly reduces the work time

9. LEVOIT Humidifiers for Large Room Bedroom

LEVOIT Humidifiers for Large Room Bedroom


  • 6L water tank
  • 36 hours of work time
  • 500 ml/h maximum mist output
  • Suitable for rooms up to 753 square feet
  • Ultrasonic technology
Chech it on Amazon!


If you were looking for a humidifier that you won’t need to check up on for a few days, this LEVOIT model might be the best choice.

The warm mist will kill any bacteria and help the plant battle different infections. Once the daylight is gone, you can move the humidifier to your rooms and enjoy the benefits of cold mist.

Forget about breathing problems, insomnia, or dry skin.

This humidifier features an outstanding design that helps with some of the extra chores.

Firstly, it has a top-fill design which means that refilling is not a hassle.

Secondly, the water tank has a large opening so it can be easily cleaned – there are no hard-to-reach areas you will have to worry about.

Still, the biggest advantage of this humidifier is a built-in sensor that has more than one purpose.

Thanks to the sensor, you won’t ever have to worry about checking the humidity level and changing the mist to keep it constant.

The sensor can easily detect any change in humidity and adjust the mist output to keep it optimal.

In this way, the plants are growing in an optimal environment – not too humid or too dry.

Besides the humidity level, the sensor is tracking the water level in the tank.

The water tank has a capacity of 6 liters which can last for up to 36 hours.

When almost all water is gone, the sensor will start the auto power-off function and the misting will stop until the tank is refilled.

This prevents damage and overheating of the machine.

Another thing that you will adore about this humidifier is how easy it is to adjust any of the parameters.

Humidity level, mist output and others can be tracked on the LED screen on the device.

Whenever you want to change one of the settings, just use the remote. This means easy settings adjustment without getting up from the couch.

Also, the remote allows you to set the timer for turning off. If the optimum environment for the plant’s growth can be reached after an hour, just set the sleep timer for one hour.


  • Automatic power off
  • Sensors for maintaining the constant humidity level
  • Reminder for refilling
  • Features a sleep timer
  • Long-lasting, doesn’t need frequent refills


  • The hygrometer isn’t so precise

10. Pure Enrichment MistAire Ultrasonic Cool Mist Humidifier

Pure Enrichment MistAire Ultrasonic Cool Mist Humidifier


  • Ultrasonic technology
  • Work time of 16 hours
  • 1.5L water tank
  • Automatic power-off
  • High and low mist output
Chech it on Amazon!


If you are all about simplicity than this could be your ideal humidifier!

For starters, it has a straightforward design that helps with the setup and extra chores.

You won’t spend hours trying to assemble the machine and then struggle with dissembling it every time it needs refilling or cleaning.

The water tank is placed on top of the base and all that you need to do is remove it from the base to clean it or add water.

When you are finished with the task, just place it back on the base.

Even though it doesn’t offer a top-fill design, it is still super easy to fill.

The tank has a large opening, so you can add water without creating any extra mess.

When it comes to the cleaning, a few brushes are included. These are great for reaching even the hard-to-reach spots and making sure that dirt is entirely removed.

Thanks to this kit, you won’t ever have to worry about mold or bacteria growing inside the humidifier.

Moreover, this model features a 1.5-liter water tank. It still provides good space coverage and even though it is one of the smallest tanks, it has an outstanding operation time of 16 hours.

When the water level is too low, there is an automatic power-off that keeps the machine safe and saves energy.

The operation time can be extended by adjusting the mist output. Only two levels are available – low and high, and if you can keep your garden healthy with a low mist output, you won’t have to refill the humidifier constantly.

Also, it has adjustable nozzles that can rotate into full-circle. These aren’t just making sure that the air is evenly humid, but keep the mist away from cables or any electronic devices you might store in the same room.

If you plan on keeping the machine turned on during the night, just turn on the night light – these will create a relaxing environment and dim the lights so they aren’t disturbing anyone.

The only thing you should be aware of is that this isn’t a humidifier for larger rooms – a tank this big can only work for medium and small rooms.


  • Easy to assemble
  • Easy to refill
  • A cleaning brush helps with maintenance
  • Allows the adjustment of mist output
  • Saves energy


  • Even in the medium-sized rooms, it can’t create a humidity level above 50%

11. Honeywell Easy to Care Cool Mist Humidifier

Honeywell Easy to Care Cool Mist Humidifier


  • Work time of 36 hours
  • 2 mist output settings
  • Top-fill design
  • Uses Honeywell wicking filter
  • Suitable for medium rooms
Chech it on Amazon!


Honeywell has created a humidifier suitable for anyone that doesn’t want to constantly disassemble and assemble their machine between refills or cleanings.

This machine has a simple yet modern design, so it will great on any surface. You can even place it in your office, to promote the plant’s growth and enjoy some fresh air.

So, what does it have to offer?

To begin with, let’s talk about the incredible water tank.

Its capacity is enough for all medium-sized rooms – this means that even larger indoor gardens can benefit from this humidifier.

The operation time of the device is 36 hours, but keep in mind that this operation time is only for a low mist output.

If you turn up the speed of mist output, the work time will be a bit lower. Still, you probably won’t have to refill the device each day.

The water tank isn’t see-through, but you won’t have a problem with tracking the water level – the window for water level is illuminated so you will always know how much water is left and whether it needs refilling.

Also, thanks to the amazing top-fill design of the tank, it can be easily refilled – just remove the cap and pour the water in.

Another thing you will love about this humidifier is how easy it is to clean it – all surfaces can be cleaned with just a cloth. A few wipes and the device will be good as new!

This Honeywell humidifier uses wicking filters. These are great for catching minerals and prevent the formation of white dust in the air – plant’s leaves will enjoy the moisture, without getting their pores clogged.

Once it is time to replace the filters, make sure that you get the Honeywell filters again.


  • Easy to clean
  • Top-fill design ensures easy refilling
  • Doesn’t require any disassembly
  • Easy to track the water level inside the tank
  • Prevents the white dust


  • It becomes noisy when the mist output is high

12. Evergreen Pet Supplies Reptile Humidifier/Fogger

Evergreen Pet Supplies Reptile Humidifier/Fogger


  • 2L water tank
  • Up to 300ml/h fog output
  • 5 feet hose range
  • Ultrasonic technology
Chech it on Amazon!


This Evergreen humidifier isn’t only great for plant enthusiasts but animal lovers as well!

If you own a pet and a large garden, both will benefit from this fogger.

What makes this humidifier stand out from others is its ability to create fog. In this way, even more, moisture is delivered to the plants.

It is ideal for gardeners that own tropical plants and other types that require extremely humid air to grow.

Firstly, let’s talk about the great design of this machine.

It features a modern, yet simple design that will fit into any room in your home. The tank is entirely see-through so checking the water level inside is super easy.

When it comes to refilling, thanks to the no-spill opening, you won’t create any mess.

The fog output can be adjusted to fit the plant’s needs. If the plants require higher humidity levels, just turn the knob on the highest. This will provide a fog output of 300 ml per hour.

Assembly of the machine is super easy – it comes with a manual and once it is set up, you won’t need to disassemble it again.

Also, it has a hose that can expand for up to 5 feet and it is compatible with most vivarium, aquariums and terrariums.

Another amazing feature of this Evergreen humidifier is an outstanding capacity.

It has a 2-liter water tank – suitable for small and medium-sized rooms.

If you accidentally forget to refill the machine, it will automatically shut-off to prevent overheating. 


  • Super easy to assemble
  • It is pet-friendly and compatible with most terrariums and aquariums
  • No-spill design
  • Automatic shut-off that prevents the machine from overheating


  • It might cause the growth of the mold in the vivarium

13. Honeywell HCM350W Germ Free Cool Mist Humidifier White

Honeywell HCM350W Germ Free Cool Mist Humidifier White


  • 1-gallon water tank
  • Work time of 24 hours
  • Features a UV technology
  • Uses Honeywell wicking filters
  • Suitable for medium-sized rooms
Chech it on Amazon!


Most indoor plants prefer a humidity level between 40% and 60% and this machine will easily create humidity that your indoor garden needs for development.

Also, it has one major advantage compared to other Honeywell models and brands on the market.

This Honeywell humidifier uses ultraviolet technology.

Thanks to the UV rays, it kills bacteria, viruses and fungi in the tap water.

Only the clean water is reaching the filter and the machine is delivering fresh air.

Besides this innovative technology, another great thing about this Honeywell model is a design.

It is super modern and practical, making all chores around the humidifier easy to complete.

The water tank is transparent, so you can easily check the water level.

Whenever you need to refill the device, simply remove the tank from the device.

There is a built-in handle that allows you to easily move the tank from one place to the other.

Also, it has a wide opening – great for both refilling and cleaning.

Since it uses wicking filters, it will require some extra maintenance – the filters will have to be cleaned regularly and replaced after some time. Keep in mind that you should only use Honeywell filters.

The humidifier has a capacity of 1 gallon that allows it to work for one day straight.

It is perfect for small rooms, but it can even keep the higher humidity levels in medium-sized rooms as well.


  • UV light is killing bacteria, viruses and other microorganisms in water
  • Portable
  • Easy to fill and maintain
  • Creates a humidity level between 40-60%


  • The performance of the machine mostly depends on the filter and will decrease if the filter isn’t properly cleaned

14. TaoTronics Humidifiers, 4L Cool Mist Ultrasonic Humidifier

TaoTronics Humidifiers, 4L Cool Mist Ultrasonic Humidifier


  • 4L water tank
  • Up to 30 hours of work time
  • 3 mist levels
  • Suitable for rooms up to 322 square feet
  • Noise level below 38dB
Chech it on Amazon!


If you are sensitive to noise, but still need a powerful humidifier, check out this TaoTronics model.

It has plenty of great features, and you will benefit from using it, not only your garden.

For starters, setting the desired humidity level is super easy with this machine.

As you already know, many indoor plants need humidity levels above 40% and keep it constant is often a challenge.

Thanks to an LED screen, you can easily track this parameter.

The machine has a humidistat that will inform you about the RH at all times.

If the humidity level is too low, just boost the mist output. There are three levels available, so the machine meets everyone’s needs.

Even when the highest mist output is chosen, the humidifier makes less than 38dB of noise – it is ideal for using it overnight, without fearing that your sleep will be disturbed by unwanted sounds.

Besides noiseless operation and great mist output, it features a great water tank as well.

It has a capacity of 4 liters that can last for up to 30 hours when the device is on the lowest mist level.

Even though the higher mist levels decrease its work time, it can still operate for 12 hours straight – more than your garden needs during the day.

When it comes to design, it is quite straightforward and modern.

The humidifier has a handle so it is easy to move from one place to the other. Thanks to the wide opening, it is also easy to refill.

Also, it uses microporous filters with cartridge – they are effectively eliminating microorganisms from water.

Even though the filters require maintenance, cleaning the machine is still quite easy. The dustproof sponge that keeps the dust away from the base will cut down on the cleaning time.


  • Silent and can be used overnight
  • Easy to adjust the humidity level
  • Easy to maintain
  • Microorganisms and odor are effectively removed from the water
  • Auto power-off when the water level is too low


  • The humidistat isn’t as precise

15. Vicks Warm Mist Humidifier

Vicks Warm Mist Humidifier


  • 1-gallon water tank
  • Work time of 24 hours
  • Suitable for rooms up to 250 square feet
  • Auto power off
  • Quiet operation
Chech it on Amazon!


Some plant species are extremely sensitive to lower temperatures and cool mist humidifiers can damage them.

This Vicks humidifier uses a warm mist that increases the temperature of the rooms and helps your plants to thrive.

So, what is special about this model?

For starters, it has a simple design. This makes assembly and disassembly super easy.

The water tank is entirely transparent, so you will always know how much water is left inside.

Also, it features a built-in handle. Thanks to this trait, carrying it from one room to the other is much more convenient.

Besides great design, the tank has a wide opening – this means that refilling can be done without any spilling, and cleaning is also effortless.

The one thing you should be aware of is that tap water can use some build-up in the water tank and heating chamber.

If you notice any orange residues, switch to distilled water and start with more frequent cleanings.

When it comes to the operation time, this machine can run for 24 hours straight.

Its 1-gallon water tank is suitable for rooms up to 250 square feet. Once the water runs out, it will power off automatically.

This humidifier can be used during nighttime as well. It is extremely silent, even when the mist output is turned on high.

Keep in mind that if you plan on using it in the bedroom, you might be disturbed by the lights since they can’t be dimmed or turned off. 


  • Doesn’t use filters so there aren’t many extra chores
  • Suitable for use during the night
  • Auto shut off saves energy and prevents overheating
  • Portable device
  • Easy to clean


  • If you use only tap water, you will notice build-ups in the tank

16. Pure Guardian H965AR Ultrasonic Humidifier

Pure Guardian H965AR Ultrasonic Humidifier


  • Ultrasonic technology
  • Cool mist
  • 1-gallon water tank
  • Work time of 70 hours
  • Suitable for rooms up to 320 square feet
Chech it on Amazon!


If you are spending a lot of time in your indoor garden, then a humidifier should improve your health as well, and not only benefit the plants.

This Pure Guardian humidifier is a great choice because it comes with an aromatherapy tray.

You can add a few drops of your favorite essential oil to the tray (or create a mix of several different scents) and relax in the room with your indoor garden.

The plants will enjoy higher humidity, and you will feel refreshed and relaxed.

Besides this extra feature, there are other amazing things about this device.

Firstly, it has outstanding work time of 70 hours. Even though the capacity of the tank is only 1 gallon, when the mist output is set on low, it can run for a few days straight.

This significantly cuts down on the time you will spend around the humidifier.

The one thing you should be aware of is that turning up the mist output will decrease its operation time. However, it will still run for several hours straight without the need for refilling.

Also, this capacity is considered for a smaller one, yet it can cover 320 square feet – this is an ideal humidifier for medium-sized rooms that require humidity levels above 40%.

Furthermore, there is an indicator light for low water levels. The light will warn you when it is time to add more water and if you aren’t able to refill it, the device will automatically power off.

This will save both energy and prevent any damages to the machine.

When we are speaking of the design, it has a simple and modern design. Also, the machine is great for smaller spaces.

Cleaning can also be done effortlessly thanks to the silver clean protection – the growth of mold or forming of any build-up in the tank is prevented.

The device is super quiet and lights can be turned off, so you can place it in the bedroom to resolve insomnia, sore throat, or problems caused by allergies.


  • Silver clean protection makes cleaning super easy
  • Quiet operation
  • Outstanding operation time
  • Essential oils can be used as well
  • Auto power off that prevents damage


  • Refilling is a bit challenging since there is no handle for easy carrying

17. Pure Enrichment MistAire XL Ultrasonic Humidifier

Pure Enrichment MistAire XL Ultrasonic Humidifier


  • 1-gallon water tank
  • Work time up to 24 hours
  • Suitable for rooms up to 500 square feet
  • Three night lights: red, blue and green
  • Three mist levels: low, medium and high
Chech it on Amazon!


Since different types of plants require different conditions, it is best to get a humidifier that will easily adapt to their various needs.

This device will do just that – thanks to the adjustable settings, it will easily adapt and create an environment that any plant can thrive in.

Let’s talk about the amazing capacity first!

This Pure Enrichment humidifier has a 1-gallon water tank.

With a tank as big as this one, it can cover a room of 500 square feet. Also, it is suitable for smaller rooms as well and easily keeps the humidity level high and constant throughout the day and night.

The operation time of the device is 24 hours, but only when the mist output is low. With the highest mist output, it still has an incredible 10-hour work time.

This means that the device can even work through the night if needed.

Another amazing feature is the adjustable mist output and nozzles. Thanks to these, the air of the room is evenly humid, so you don’t have to move the device or worry that some plants are not getting enough moisture.

When you need to boost the mist output, just turn the knob to the right.

If you are among people that need a humidifier to sleep than this one is ideal!

Firstly, it has a night light. The light is creating a relaxing environment, to help you fall asleep faster.

You can easily change the color of the lights – blue, green and red color are available, so pick the one that relaxes you the most.

Because it offers quiet operation, you won’t even notice that the device is in the room. Be aware that higher mist output does cause more noise, but it is similar to white noise that won’t disturb your sleep.


  • Silent operation
  • Great operation time
  • The device powers off automatically if the water level is low
  • Mist output can be adjusted
  • Rotatable nozzles ensure that the air is evenly humid


  • A low amount of water can get trapped inside the tank and cause mold

How to Keep the Humidifier Clean – Proper Maintenance

We have already talked about the importance of keeping your machine clean.

To avoid white dust, fungi, bacteria, or other problems, you should clean the humidifier often.

Typically, gardeners that have to use the humidifiers every day, clean them every week.

If you aren’t using it regularly than you don’t have to stick to a strict cleaning routine.

The maintenance of a humidifier consists of cleaning a water tank and filters.

When it comes to cleaning a water tank, all you need is a detergent and a cloth or sponge.

Make sure that the detergent isn’t too aggressive.

You can also clean the tank by soaking it in water and vinegar.

Also, when refilling, it is best to use distilled water. This water should be changed daily.

Filters should be removed before cleaning.

If you notice too many dust particles, use a vacuum cleaner.

When a filter is wet, skip the cleaning with a vacuum cleaner. Place it in a plastic container and fill it with water and either a detergent or vinegar.

It should sit in a solution for a few minutes until all build-up is removed.

Then wash it with tap water and let it dry before placing it back.

What Is the Difference Between a Humidifier and a Diffuser?

If you already own a diffuser, you are probably wondering whether you can use this machine for increasing humidity, and save a few bucks.

However, a humidifier and a diffuser aren’t the same things, so if you need to boost the air humidity, you should definitely use a humidifier.

The diffuser is used for spreading pleasant smells into the air.

A few drops of essential oil are mixed with a little bit of water.

The smell is spread as vapor, but because the small amounts of water are used for mixing, it doesn’t increase the humidity to a needed level.

Also, diffused needs even more attention than a humidifier.

If the plants require extra high humidity levels, you will need to refill the diffuser a few times per day.

On the other hand, the humidifier needs refilling every day or every other day, depending on the size and the set level of humidity.

So, if you want your plants to thrive, save up and buy a good plant humidifier.

How to Additionally Improve Humidity?

Even with a humidifier, you might need to increase humidity additionally.

If you own a tropical plant, that prefers high humidity levels, there are a few ways to boost the humidity of air and get the most of your machine.

Here is a list of things you can do:

1. Use a humidity tray

You do not have to spend extra money on the humidity tray – it can be easily made by a few things you probably already have in your home.

Firstly, you will need a plastic container. It should be big enough to fit all of your plants.

Then you will need a pack of decorative stones. These can be easily found online.

Make sure that you buy enough to cover the bottom of the plastic container.

When you fill the container with rocks, add water. On top of the rocks, place the pots with plants.

Water that is evaporating from the container will increase the humidity and your garden will thrive.

2. Grow the plants in groups

The plants are constantly releasing moisture.

If many plants are grouped together, then they will benefit from this process.

The moisture released by one plant will be absorbed from the other and so on.

Also, you should always group taller plants with smaller ones.

Any moisture that the tall plants are releasing will naturally end up on the smaller one.

3. Pick the right spot for the plant

Even if you are using the humidifier, you might unhappy with the results.

The problem probably isn’t in the humidifier but the spot of the plant.

The heat emitted by the radiator can cause damage even when the humidifier is working.

Move the plants from all heat sources, so that they are closer to the humidifier. Also, place the pots on shelves or tables if the floor is heated.

Draughts and doorways should be avoided as well – in these places the humidity is also lower.

4. Misting the plants

This does seem like extra work, especially when you own a humidifier, but it could help you to additionally raise the humidity of the room.

Some humidifiers can’t create the extremely high humidity some plants need, so your garden will benefit from this small boost.

Misting doesn’t have to be done frequently – once a week is more than enough if the humidifier is working constantly.


Plant humidifiers can help out your garden to thrive. They can positively affect your health as well.

Hopefully, this guide covered everything you wanted to know about plant humidifiers.

If you have any further questions, write to us in the comments.