Very often, even professional gardeners wonder what is the best fertilizer for roses since this plant, although incredibly beautiful, can be very challenging to grow and nurture.
They look vulnerable and delicate, and that’s exactly how they are when it comes to taking care of them.
While the knockout roses are more durable, resistant, and flexible, the majority of others are very fragile and require the right nutrients.
That’s where rose fertilizer comes in handy.
But, when deciding how to choose the right one, it can be difficult to decide considering the variety of options out there.
We have our top pick, but the other five options from the list are also worthy of your attention! So stay till the very end and find out which one is our absolute no.1.
Best Fertilizer for Roses
These are some of the best fertilizers for roses that I’ve tested so far. Feel free to check them out!
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✔ High level of phosphorus
✔ Outdoor plants
✔ Feeds instantly
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✔ 3 products in 1
✔ Against insects
✔ Against diseases
✔ Enough for 32 rose bushes
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✔ Easy to use
✔ Suitable for new and existing plants
✔ Natural ingredients
✔ 2 kg pack
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✔ Instant nutrient consumption
✔ Weekly use
✔ For any rose type
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✔ Non-GMO fertilizer
✔ Safe for people and pets
✔ Organic and eco-friendly
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✔ Mess-free and simple to use
✔ 10 pre-measured nutrient spikes
✔ Completely organic
✔ Biodegradable and sustainable
1. Scotts Plant Food, 2 lb
If you’re an experienced gardener, you already know that roses need a high level of minerals and phosphorus in the first place to thrive.
That’s exactly what you can expect after using Scotts.
This little thingy is water-soluble, which means that it’s very quick and simple to use.
Measure the fertilizer as indicated on the bottle, mix it with water, and add to the soil everywhere around the plant.
Your roses will be fed instantly, and that’s why you’ll need to use the fertilizer once every 1-2 weeks to achieve the best results.
You’ll be able to use Scotts Super Bloom fertilizer on your outdoor and indoor plants and soon enough have your garden filled with amazing roses that have big and colorful flowers and strong and healthy stem and roots.
Not only that is phenomenal for roses, but you can find its use on other plants and fruits, which is fantastic because of its versatility.
You’ll appreciate the versatility if your garden is abundant with numerous different plants and not only roses, and you hate spending too much money on multiple plant fertilizers.
- Easily mixable with water
- Instant feeding provides great results after a short period of use
- It can be used on various plants
- It needs to be applied every week so it may not be a good solution if you don’t have time to use it as frequently
All in all, Scotts offers one of the most reliable choices when it comes to water-soluble products for roses.
It will provide plants with the care and nutrients they need to thrive and grow lush and healthy.
2. Bayer Advanced Rose Care Granules, 4-Pound
A lot of people love the convenience they get while using these Bayer Advanced Granules for roses.
Isn’t it super-convenient to have only one product that changes three other really necessary ones? Of course, it is!
The fertilizer will successfully feed your roses by slowly releasing the nutrients that the plant needs to consume to grow stronger and have prettier blooms.
Have both the roots and the stem of the roses strong, and the flowers vibrant and big with this very nurturing rose food.
These granules will also offer excellent protection against insects that can harm the leaves and flowers of your roses.
Bayer Advanced Flower Care product is great against Japanese Beetles, Leaf Beetles, Whiteflies, Black Vine Weevil Larvae, etc.
When it comes to plant diseases, this product is an amazing choice if you have problems with mildew, black spot, rust, or any other unpleasant conditions that may jeopardize the overall health of your plant and blooms.
The use of these granules is very simple.
All you need to do is measure the right amount of product as instructions say, pour it around the base of the plant, work into the soil with gardening tools and water thoroughly.
Repeat this process every six weeks, and you’ll see your roses growing healthier and stronger very soon.
- You will get three useful and beneficial products in one
- The granules feed and protect the roses for up to six weeks
- Strong and lush roses without the risk of insects and diseases
- It’s not clear if it’s suitable for indoor use
Nowadays, practical and simple products are more popular, plant food included.
That’s why this 3 in 1 rose food, insect and disease protection is a top-pick of many gardeners.
Provide your plants with both food and health with these easy to use Bayer Advanced Flower Care granules.
3. Miracle-Gro Shake ‘N Feed Rose, 4.5 LB
This is our top choice for rose fertilizers not only because of its ease of use but also because it’s very beneficial to this gentle plant.
You’ll find it very beneficial, and we can guarantee that this is the best fertilizer for knock out roses, as well as other types of this gentle plant.
You can use this Miracle-Gro both in the ground as well as inside the container, so you won’t have to worry about the place you plant your roses in.
It will be neat and mess-free to use, no matter if your roses are in your garden or indoors.
You’ll notice that this fertilizer is very simple and intuitive to use.
All you need to do is open the cap of the bottle and add the fertilizer evenly onto the soil. Make sure it’s dry and not mixed with water.
Then, you should work the fertilizer into the soil gently, with gardening tools, and water it thoroughly.
Repeat the process every three months, and your roses will consume all the necessary nutrients successfully.
Thanks to Miracle-Gro Plant Food, your roses will be taken care of and bloom beautifully all season.
Your roses will be nourished both above and below the soil, and they will be lush and colorful. It is great for baby plants as well as grown roses.
This rose fertilizer is rich with all the nutrients that are beneficial to your plants, including feather and bone meal, as well as kelp — no wonder why this is the best fertilizer for roses on the market.
The nutrients will be released gradually during the three months, after which it’s time for another “sprinkle” of this fertilizer.
- Simple and easy to use
- Nourishes plants below and above the soil
- Feeds the plants for up to three months
- Colorful and lush roses
- None so far
You can’t go wrong when it comes to this rose fertilizer because it will surely help your beautiful plants thrive and have a lovely odor.
If you want to keep your roses healthy both in the ground and inside a planter, Miracle-Gro Plant Food for roses is the way to go.
4. Miracle-Gro Water Soluble Food, 1.5 lb.
If you’re a trusty user of Miracle-Gro products, you know just how much good they do to all plants, roses included.
This rose plant food is different from the previously described one when it comes to the application process as well as the frequency of use, but it still provides fantastic results.
Your decision on which one to use should be based on your gardening style as well as the time you have to devote to your roses.
When it comes to this Miracle-Gro, as you can tell, it’s soluble (completely) in water, which means that it’s super-simple to use while you are doing the watering.
For outdoor roses, you just need to mix one tablespoon of Miracle-Gro with one-one and a half gallon of water and then apply to the base of the plants.
When it comes to indoor plants, you need to mix a half of teaspoon with one gallon of water and apply it to the soil in the planter.
Repeat this process once a week for optimal results and expect lush, strong, and beautiful roses that will have vibrant color.
This type of Miracle-Gro rose food will provide an instant nutrient release and feed your plants very quickly, which means that the results will be visible very soon, too.
If you own the Miracle-Gro Garden Feeder, you can, of course, use this rose food with that, as instructed. Expect the best results very fast with the best fertilizer for knockout roses as well as many other types of roses.
- Instantly feeds the plants
- Very easy to use while watering, the instructions are easy to understand
- Contains all the nutrients for the optimal growth of your roses
- You’ll need to use it more frequently (once every 1-2 weeks)
If you’re someone who has time to invest in taking care of the roses on a weekly basis and doesn’t mind using it frequently, this Miracle-Gro is the ideal choice for you.
It’s the perfect rose food, especially if you’re a loyal user of Miracle-Gro products and prefer the convenience of water-soluble plant food.
5. Dr. Earth, 12 lb
Another organic and non-GMO rose fertilizer is this incredible Dr. Earth that is really effective in taking care of your plants.
Rich with numerous minerals and proteins that your roses need, it will provide the plants with all the necessary nutrients for healthy growth.
This fertilizer is free of toxic chemicals, and it is made of pure, organic ingredients that will both promote the state of your plants and be safe for people and pets too.
You’ll appreciate the versatility of Dr. Earth’s plant food because you’ll be able to use the fertilizer during planting as well as transplanting and for the grown plants, as indicated in the instructions written on the bag.
Make the environment of your roses perfect for their growth and allow them to reach their full beauty, strong stem and roots, and beautiful blooms.
When it comes to frequency of application, depending on the area you live in (soil conditions, light, humidity, etc.), you’ll need to add the fertilizer every six to eight weeks to achieve optimal results.
- The formula is organic and non-GMO
- This fertilizer is toxin-free and therefore safe for pets and humans
- It’s versatile and suitable for every stage of your roses’ growth
- It doesn’t offer an immediate and instant boost but requires time to be effective
When having time to dedicate to care of your plants, this organic fertilizer is a smash hit. Even though it doesn’t provide immediate food boost, it’s very effective in the long run, and it will keep the roses healthier and stronger for a long time.
6. Jobe’s Organics Rose Spikes, 10 Spikes
If you’re someone who prefers the slow-releasing fertilizer that doesn’t require a frequent application, and you really enjoy using 100% organic products, you’re in for a treat with these Jobe’s.
Using this type of fertilizer ensures that your plants get high-quality, organic nutrients without toxins or chemical ingredients that could be damaging to the roses.
The spikes are pre-measured, and the packaging is waterproof in order to prevent product waste.
The nutrients will be released gradually and feed your roses enough to bloom and grow strong.
We found this rose food very convenient and mess-free to use since it’s very simple to insert them into the soil.
This is, by far, one of the best organic fertilizer for roses we’ve ever tried.
The packaging contains 10 spikes, and the instructions are very clear.
It’s written how many spikes to use according to the surface you want to cover.
You’ll need to use a hammer to drive the spikes 1-2 inches into the soil, and that’s it! Very simple, fuss-free, and effective.
Use this fertilizer during the growing season and provide the roses with the maximum of good nutrients that will help them thrive.
- Organic ingredients are beneficial to your plants
- The spikes are easy to insert and effortless to use
- No product waste
- You may go through one packaging very quickly
Taking care of your roses doesn’t have to be messy and stressful.
These affordable plant food spikes will provide your roses with the organic nutrients while being easy to insert into the ground.
How to Decide which Rose Fertilizer is the Best?
Choosing the best fertilizer for your roses isn’t as easy as it may seem.
You can choose between organic and inorganic fertilizers as well as granular, liquid, water-soluble, or plant food in pre-measured spikes.
While this is a matter of your preference and it doesn’t necessarily affect the growth of the plants, the most important part of your decision making should be the nutrients that the fertilizers can provide to your roses.
When choosing the best fertilizer for your roses, you should keep in mind the season, as well as the state of the soil and overall climate conditions in the area you live in.
Having said that, no matter if you’re looking for the best fertilizer for roses in summer, winter or spring, you should know which nutrients to look for in order for your plants to be fed successfully so that they can grow strong and lush.
The three most important nutrients for roses are nitrogen, phosphorus, and potassium, and you’ll usually see their ratio in N-P-K form (where letters are replaced by the numbers).
Other than these three, your ideal fertilizer should also consist of the following nutrients: Zinc, Boron, Calcium, Sulfur, Copper, Magnesium, Iron, and Manganese.
Keep in mind that young roses are usually better off with liquid fertilizer and don’t really benefit from the granular one.
The Best Way to Fertilize Rose Plants
Before we even speak about the correct way of adding the fertilizer into the soil, you have to make sure that the pH level of the soil is right. Roses thrive in the 6-6.5 soil, and that’s when you can add the rose food.
Other than that, you should also know that the best results are achieved if you change the type (consistency) of fertilizer every once in a while. Start with the liquid version, and they change up a bit by using food granules, and similar.
Each fertilizer you purchase should have clear instructions on how to use it. Still, you’ll find the majority of them very intuitive and easy to use.
Water-soluble rose food will need to be mixed with water and applied like that.
Granular and similar solid forms of fertilizer are usually added according to the instructions, worked into the soil on the bottom of the plant with a gardening tool, and then watered thoroughly.
How Frequently to Use Rose Fertilizer?
Too little or too much fertilizer can be equally damaging to your roses.
If you use too much of it, you risk burning your plants. On the other hand, too little fertilizer won’t have any effect because it won’t feed the plants sufficiently.
For this reason, it’s very important to establish a good schedule of feeding your plants and monitor the reaction to different fertilizers.
This, of course, depends on a couple of factors.
As you can probably conclude from the product reviews, the first one would be the type of fertilizer you use.
While granules and spikes are usually fertilizers that release nutrients slowly, and they are typically reapplied every six to eight weeks, liquid fertilizers give an instant boost and feed your roses quickly.
This means that you’ll need to use them every week.
Another essential aspect to keep in mind is the state and consistency of the soil. Sandy and soft soils will need more frequent fertilizing as opposed to loam type soils.
Manufacturers try to give detailed instructions on the back of the packaging, but still, follow the plants’ consumption and adjust the frequency of using the fertilizer according to that.
When to Fertilize Rose Plants?
As the last thing in this article, we should also mention the best time to fertilize roses.
You probably already know that roses grow during the winter, and it is very important to keep them strong and healthy because of the harsh temperatures.
That’s why it’s crucial to add fertilizers rich with nitrogen during fall since this nutrient is very beneficial to the roots of the plant.
This will make sure your roses have strong roots and resist lower temperatures during winter.
Once the winter is over, you can again introduce fertilizers after the first weeks of spring.
Having said that, the most reliable thing to do is follow the state and growth of your plants in order to adjust the use of plant food according to the overall conditions of the weather, soil as well as humidity.
Before even beginning your journey with the rose food, you should be aware that it will take some time before you manage to figure out precisely what’s the best kind of fertilizer as well as the frequency of using it.
Monitor your roses’ reaction and use the plant food in the way it benefits them. These plants require a lot of nutrients and love being fed with good-quality fertilizers, whether you choose to use the organic or inorganic one.
While inorganic ones are cheaper and provide faster results, investing in good-quality organic fertilizers is very beneficial not only to the roses but also to the environment.
Choose the brand and type with which you feel the most comfortable, and that gives the best results, and help your indoor and outdoor roses reach their potential and have beautiful blooms and strong, healthy stem and roots.
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