Plants known as cascading flowers, or spillers are the most popular flowers for window boxes. There’s no spring decoration as stunning as having colorful flowers falling down your windows!

They came in a variety of shapes and colors, so you will inevitably find something exactly to your tastes and needs!

Here are the 35 most popular cascading flowers.

Colorfful List of Cascading Flowers

1. Pansy

cascading flowers pansy

The first and most important fact you need to know about pansies is that they are colorful and in bloom almost throughout the whole year.

Pansies even prefer winter to summer and tend to be quite resilient even when temperatures are freezing, and the times when there’s frost.

These flowers are best known for their multicolored petals. They usually have a very dark center part, and the outer parts of the flowers can be yellow, purple, red, white, or pink.

Despite loving colder temperatures, pansies need full or partial sun exposure to thrive, so keep that in mind when planting them – don’t do it on a north-facing window and plant them in these boxes.

Make sure that you flower these regularly, as one of the main reasons pansies don’t survive is not having enough water.

Some of the different kinds of popular pansies are “Jolly Joker”, Princess Series, and Fama Series.

If you ever grow bored of having these on your windows, just have in mind that pansies are edible. So why not decorate a cake using them?

2. Sweet Potato Vine

Sidekick Sweet Potato Vine

If you need a plant full of leaves for your container, then Sweet Potato Vine is the way to go.

Like the previous plant, Sweet Potato Vine is more than resilient when it comes to environmental conditions, especially when it comes to temperature, so it’s safe to say that you can count on this one to add to your garden during any season.

When it comes to maintenance tips, here are a few basic ones.

It’s best to provide the flowers with around 6 hours of full sun each day, and then make sure they get some shade.

What you can gather from this is that perhaps the best solution would be to put your window box with cascading flowers on either a West or East facing window. That way, there will be enough sunlight as well as partial shade.

Water your Sweet Potato Vine in a moist environment watering it once a week, or more when the temperatures get high.

But, there is one important warning: make sure you keep this plant away from any pets you might have, as it is poisonous for them.

3. Sweet Alyssum

Sweet Alyssum or Sweet Alison Seeds



One of the cutest cascading flowers is probably Sweet Alyssum.

This beautiful plant is recognizable by its looks, which resemble a million tiny bouquets.

The colors these flowers usually come in are purple and white, and they are the perfect addition to your window box if those are the colors that you are missing.

This cascading flower is incredibly easy to take care of, too!

It loves full sun exposure, and when it comes to watering you should provide it with around an inch of water a week.

If you don’t have a place with full sun exposure, that’s okay too as this one is quite tolerant of being in partial shade as well.

Another nice thing about this one is its fragrance, which many describe as sweet and honey-like.

As you can see, there are many good reasons why this one remains to be a window box favorite!

4. Blue Star Creeper

How to Grow and Care for Blue Star Creeper

Even though this one is usually seen decorating the ground in the garden, it can actually be used as a very good addition to your window boxes.

Tiny, in light blue and purple tones it can look lovely among other flowers.

Blue Star Creeper blooms during the spring and summer seasons and likes to be in full and direct sun.

It’s easy to plant and grow, and the maintenance is equally easy.

Since it’s native to New Zealand and Australia, you should search for it next time you’re looking for an addition for your home if you leave in said places.

Having this in mind, know that even though it does thrive in warm climates it absolutely can adapt to colder temperatures, it just won’t be as dense with its flowering.

5. Cup and Saucer Vine

 Cup-and-Saucer Vine

Here we have one of the more unique-looking cascading flowers.

As you might assume, the name Cup and Saucer come from the shape – it really does look like a lovely little cup.

With its purple shades and an interesting center, it is often seen in fairytales and fairy homes, so it’s the perfect solution if you are keen on making your home a bit more magical!

This one is native to Mexico, so if that’s where you live, it’s going to bloom and grow beautifully in your window boxes and containers.

To make sure your green and purple plant is as good as it can be, make sure it’s getting full sun exposure, especially during spring and summer as these are the seasons it blooms in.

If you live in hot climates, however, you will want to make sure there is some afternoon shade as well.

6. Annual Candytuft

annual candytuft

This one is as good for your cascading flowers container as well as the garden, so if you want your landscaping to look cohesive you should try planting a flower like this in both places.

When you do so, make sure that the plants will get full sun exposure, and that you are growing them in containers with good drainage.

It’s advised to wait with the watering until the soil gets completely dry.

When it comes to coloring, you can expect to have white, purple, pink, and red.

It blooms in late summer.

7. Parrot’s Beak

Lotus berthelotii

If you are looking for an exotic-looking plant to create a beautiful spill from your window boxes, Parrot’s Beak might just be the one to go with.

With orange, red, and yellow tones it’s guaranteed to make your garden containers look way more fun!

This trailing plant blooms during spring and early summer and gets many more flowers if it happens to be a bit colder.

Even though the looks may deceive you, this flower actually doesn’t agree with hot weather whatsoever.

If the temperature during the night gets significantly lower, then it might survive the summer season.

It does prefer being in full sun, but when it gets hot, you should opt for keeping it in partial shade.

8. Fan Flower

Scaevola Fan Flower Info - How To Grow Fairy Fan Flowers

By the list so far, one might assume that purple flowers are the best cascading flowers out there, as here we have another one.

Fan Flower got the name from its shape and is native to Australia.

What is also interesting about it is the fact that it is fairly new on the American continent, making it the right choice if you want something exciting for your spillers.

As it blooms from spring all the way until the end of fall, you can expect it to decorate your house for the majority of the year.

Fan Flower is really easy when it some to maintenance so you can water it only when you notice the soil has gotten completely dry.

Make sure it gets around 6 to 8 hours of full sun exposure daily.

9. Madagascar Periwinkle

Madagascar Periwinkle

As the name suggests, Madagascar Periwinkle is native to the island of Madagascar, making it an amazing choice for bringing something more exotic to your window boxes.

It can be found in white and pink, and it’s very tough when it comes to surviving different environmental conditions.

However, it definitely prefers being in full sun most of the time, and sometimes in partial shade.

To keep it healthy and thriving be careful not to overwater it.

10. Lantana

Caring For Lantana Plants: Growing And Care Of Lantanas

Looking like a dozen little bouquets, Lantanas are probably the cute addition to your window box that you’ve been looking for.

To plant them successfully make sure you’re doing it somewhere with a lot of sun exposure and in well-draining soil.

Warm temperatures are what Lantanas like the best.

When they are still newly planted, make sure you are watering them a lot, but once they are all settled in it’s best to avoid soaking them more than once a week.

You can expect them in a variety of different colors, everything from red, pink, orange to yellow.

11. Fuchsia

Fuchsia Plant Care: Fuchsia Growing Tips For Success

As the name suggests, Fuchsia flowers are brightly colored in purple and pink hues.

A fuchsia is a great option if you want to make your window box a bit more interesting.

Besides the colorful aspect, these flowers bloom downwards, making them perfect spillers.

When growing them, make sure to place them in a shade since they are not fond of heat.

They grow the healthiest with daytime temperatures below 27 degrees Celsius (or 80 degrees Fahrenheit), and they bloom from spring to fall.

Fuchsias love humidity, so make sure that you are watering them regularly, and if you live in a drier climate maybe consider getting a humidifier.

When winter comes, it’s best to bring them inside your house, specifically to a dry and dark area, and water them only when the soil completely dries.

12. Nemesia

What Is Nemesia: Learn About Nemesia Growing Conditions

Nemesia is a nice little flower, and at first glance, it resembles tiny orchids, which can be a great addition to your window box.

This annual plant can be found in violet, pink, blue, and white and can grow up to 2 feet.

When it comes to placement, Nemesia likes to be in full sun but thrives when provided with a bit of shade too.

Opt for this for your window box if you live in colder climates because Nemesia grows best when in a colder environment.

It can bloom from late spring all the way until there’s frost in late fall.

These plants don’t require too much maintenance and when it comes to watering the most important thing is to keep it just moist enough – so water only when you notice the soil being dry.

13. Petunia

Petunias: How to Plant, Grow, and Care for Petunias

Petunias are the classic and for some even the best cascading flowers.

Window boxes all over the world can’t go without having these in them at some point.

They come in any color combination you might need, ranging from bright to deep, and they bloom for a big part of the year too – from early spring until the first frost.

Another good trait Petunia has, is that it is very tolerant to heat and doesn’t need too much watering – once a week is all it needs.

However, during midsummer petunias can get leggy and produce flowers at the tips of the stems, so some pruning during this period is advised.

14. Licorice plant

How to Grow Licorice Plants in Gardens or Containers

If you need some green tones for your window boxes, the Licorice plant can be a good choice.

Licorice is good for many reasons, it tolerates drought well, it loves hot and humid weather making it quite easy to please.

Also, as the leaves and stems are fuzzy, Licorice has natural protection from any pests and therefore can protect the remainder of your cascading flowers.

This one is a fast-growing plant and likes to have as much sun as possible.

The name for this plant actually comes from the smell it gets when the weather is warm and summer is at its peak.

Licorice plant doesn’t like to get soggy, so make sure you are planting it in well-draining soil and don’t overwater it.

With its trailing and cascading kind of growth, this one is perfect for window boxes and hanging containers.

Because of the fuzzy hairs it has, Licorice can look silver under the light.

15. Trailing Snapdragon

Trailing Snapdragon

These stunning trailing flowers with an exciting name are a great way to make your window boxes or even hanging containers more breathtaking.

Trailing Snapdragon is available in a variety of colors, but it stays within the range we’ve had so far with cascading flowers on this list red, orange, yellow, pink, and violet.

As it’s not a fan of warm weather, Trailing Snapdragon is usually flowering during spring and fall.

When it comes to lightning, like most plants in your window box, it likes to be in the sun as well as a partial shade.

When it’s still newly planted, you should water it daily for around two or three weeks, and after that, it needs water every other day, or every three days.

Having Snapdragon can improve the look of your garden a lot, as the spill, it can create is very nice gracious.

16. Swan River Daisy

Swan River Daisy

If you’ve been wanting to add some pastel tones to your home, then Swan River Daisy might be exactly what you’re looking for!

The gentle look and the thin petals are what make this one look quite special, however simple it may look.

It grows during spring, summer, and fall, and it requires moist, organically rich, and well-draining soil to grow nicely.

Swan River Daisy should be planted in full sun, as that insures dense growth.

If u plan to plant your Swan River Daisy in a container, then you should seriously consider fertilizing with a fertilizer that has 5% nitrogen, 10% phosphorous, and 5% potassium.

17. Creeping Zinnia

Creeping Zinnia

If you happen to be a fan of sunflowers, then this might be an interesting choice for you as Creeping Zinnia looks like a really tiny sunflower.

Once you plant it, it will provide you with bright yellow color for the whole season.

It is also trailing, so it will be nice in your garden.

Just like a sunflower, Creeping Zinnia enjoys being in the sun, and you should plant it around five weeks before spring starts.

There is not anything specific when it comes to caring, so just make sure you’re watering it just enough and not too much.

18. Ivy Geranium

Ivy Geranium Care: Tips On Growing The Pelargonium Peltatum

Even though Ivy Geranium is more popular in Europe than in the U.S. it might not be a bad idea to consider it as it is slowly gaining popularity in the States too.

It can grow in a shrub formation as well as spread.

Mostly you will find it in some kind of rosy color, but it can be anything except blue and yellow.

It is also great that this one is self-cleaning, so you don’t even have to worry about deadheading.

If you live somewhere where the temperature goes above 80 degrees, then keep it in partial shade, but if otherwise then being in full sun is absolutely okay.

19. Nasturtium

Nasturtium: Planting, Growing and Caring for Nasturtiums

A few things you must know about Nasturtium is that it’s easy to grow, and edible making it a great choice if you have children.

They grow well in containers and also have a lovely smell to them.

Their vines tend to drape and climb beautifully, so having them in window boxes usually works out pretty great.

Water Nasturtiums regularly but don’t overdo it.

In case summer gets too hot, they might get heat-stressed which can lead to a pause in blooming. To resolve this, you should thoroughly water Nasturtiums and they are likely to be back on track.

20. Black-Eyed Susan Vine

Black-Eyed Susan Vine

If this name sounds familiar to you it might be because these flowers were named after quite similar plants – basically the same minus the vine.

It blooms in the summer and fall and can grow quite high – 8 feet when in a container and up to 20 feet if planted in the ground, and if you are living in a frost-free zone.

Also, in a climate like that, Black-Eyed Susan Ivy is evergreen!

When it comes to sun exposure, this one likes being in full sun and eventually a partial shade.

And when you water it, make sure it’s always moist but not wet.

21. Wave Petunia

Petunia Wave Purple

One of the newest and most popular varieties of Petunia deserves a mention of its own.

Coming in any color a regular Petunia does, this one is different in the sense that it’s even easier to take care of, especially if you are a busy person but like your window box to have a pop of color.

Care requirements are quite simple and regular, it should be planted in well-draining soil and exposed to full sun.

Keep them moist but never wet and fertilize with all-purpose fertilizer every two weeks from spring until the middle of summer.

Contrary to most other Petunia varieties, this one also won’t need any deadheading.

22. Moss-Rose

Black-Eyed Susan Vine

When you look at the leaves of this one, you will probably think how Moss-Rose must be quite tough and resilient, especially when it comes to drought conditions.

The petals are brightly colored and there’s a resemblance with miniature roses in the shape.

It can start blooming in early summer and be in a flowering state up until there’s frost.

The preferred soil is sandy, with medium moisture and, of course, well-draining.

If you happen to have a cat, dog, or a horse in your home, you should be aware as this one is toxic to them.

Make sure you keep it away from the places they might reach (which can be tricky when it comes to cats).

23. Mandevilla

Mandevilla Plant Care - Growing Mandevilla In Your Garden

If you want a tropical feel in your own home, Mandevilla can be the next addition to your window box.

Soil for this one should be sandy and well-draining, with a lot of organic matter.

It’s very important to give Mandevilla the sun exposure it needs. Like most flowers so far, opt for full sun but if it happens that some partial shade needs to happen, it won’t be a problem.

For it to keep its beauty during summer, make sure you’re giving it some high phosphorus and water-soluble fertilizer, once in two weeks.

To keep it nice and fresh during all four seasons, take it inside when winter rolls around and temperatures drop below 50 degrees.

24. Impatiens

Impatiens plat care

Impatients can be a beautiful boost for your window box if you are looking for something small and sweet.

These flowers require soil that is moist and well-draining, and when it comes to lightning, Impatients actually like being in a partial or even a full shade.

However, if the place you’ve imagined them at has some sun too, they can adapt quite well, just expose them to some brighter sun for a week.

Also, make sure to fertilize them regularly.

During spring and summer, you should use water-soluble fertilizer once in two weeks.

When it comes to watering, Impatients need at least 2 inches of water weekly, and the amount should be doubled when temperatures rise over 80 degrees.

25. Begonia

Growing Annual Begonia Plants - Information On How To Grow Begonias

This flower has a quite interesting shape, so if you’ve been thinking about adding something like that to your window boxes, here is what you need to know about Begonia.

Depending on the variety, they can differ in how much light they like, but a place with some sun and a partial shade should work well. Anything but north-facing windows is good.

The most common types usually bloom from early summer until frost, but this may vary if you are growing them inside.

If you have pets, make sure they don’t come near your Begonias, as they are toxic to pets, especially the tubers.

To keep them healthy, you will have to do some occasional deadheading, and that’s the case with all types.

You should make sure that the soil is always moist, but not too wet.

Too much water can also be the easiest way to kill Begonias, so really be careful.

26. Joseph’s Coat

Party Time Alternanthera Plant

Joseph’s Coat is a perfect plant if you’ve been missing some green and burgundy tones in your window boxes.

The patterns on the leaves are mostly burgundy and brown, but you can also find them in pink, orange, red, yellow, copper, or purple.

Joseph’s Coat can grow up to 3 feet and can be kept both inside and outside.

This one is really easy to take care of and for the most part pest resistant.

Just make sure there’s well-draining soil, and that it gets lots of light.

It needs a lot of water, so make sure to keep it consistently wet to avoid any problems.

However, during winter you can take the watering down a notch, as that’s not its growing season so it doesn’t need much water.

27. Bidens

Bidens Plant: Care and Growing Guide

This flower is always interesting to see because of its bright colors and needle-like leaves.

If you choose to add Bidens to your window box, then here are some basic tips you should know.

These flowers can be annual or perennial depending on where they are planted.

They need a medium to full sun exposure, and the soil you grow them in should be rich and well-draining.

You can expect your Bidens to bloom during summer, and when mature you can expect them to grow up to 12 inches high.

It is also highly resistant when it comes to temperature so that shouldn’t be a worry.

28. Million Bells

Million Bells

These colorful flowers can be considered one of the most popular ones for window boxes.

A million Bells are quite special because they attract butterflies and hummingbirds, so if you are a nature and animal lover, this can be a really nice thing to have around.

They grow around five inches tall but can go up to nine sometimes.

When it comes to caring for them, you should make sure they have full sun exposure, and rich, moist, and well-draining soil.

They bloom from early spring all the way until frost, so you will have them around for quite a bit of the year.

You should keep the soil be evenly moist and make sure it never dries out completely.

A million Bells thrive in a warm, and somewhat humid environment, so if it gets dry you should mist them with some water.

29. Glory Flower

Morning Glory: Plant Care

These charming flowers are something you should look into if you want some blue-toned elegance in your home.

Like the previous flower, this one attracts hummingbirds and butterflies.

To keep Glory Flower happy and healthy, you should put some liquid fertilizer after planting them.

There are no specific care needs, but you should water a bit more when the weather gets dry, but besides that keep a basic watering schedule.

One warning you should know about is that the seeds can be toxic to kids and pets, so keep them out of reach.

30. Lobelia

Growing Lobelia: Tips For Care Of Lobelia

Another great choice if your window box has been missing some blues!

Lobelia is a very beginner-friendly and easy to grow plant.

It blooms during summer and produces flowers up until there’s frost in the fall.

The only important part of the care schedule should be the increased need for water when the temperature gets really high.

Lobelia actually likes to be in a colder environment, so if you live in such a climate, you should definitely consider it.

31. Silver Spurflower

Silver Spurflower

Here we have a great pick if your window boxes need some kind of background and greenery.

This annual plant is a great companion plant for flowers like Petunias, Bidens, and Geraniums.

It tends to grow from 2 to 3 feet high, and about 14 inches wide.

It needs both sun and a partial shade.

The soil should be well-draining and evenly moist at all times, especially when the weather gets warm.

Occasionally, you might have to trim it back a bit in order to keep the growth neat and compact.

32. Verbena

Verbena

Verbena is a great flower to have around as it has long-lasting blooms and stays resilient even on the hottest of days.

There are different types which can be either annual or perennial, and it’s actually best to plant them on the sunniest and driest of your window boxes.

It needs 8 to 10 hours of sun daily, so a south-facing window will do for this particular window box.

Verbena should be watered only at the base, and wetting the foliage should be avoided.

During spring and after the occasional trims, you should apply some slow-release fertilizer for the best growth.

33. Narrowleaf Zinnia

Narrowleaf Zinnia

Here we have another variety of Zinnia, and as the name suggests, the leaves of this one are more narrow than the already mentioned Creeping Zinnia.

This one grows anywhere between 8 and 16 inches tall.

It requires full sun and well-draining soil, but it can work really well even with slightly dry clay soil.

Narrowleaf Zinnia is more than tolerant when it comes to drought so that won’t be a problem.

It blooms during summer, and until the frost starts.

Otherwise, there is no other important indication you should be aware of.

34. Forget Me Not

;Forget-Me-Not Growing Tips | Horticulture™

Here is a name you’ve probably heard before!

Forget Me Not is another great choice if you need bluet tones in your window boxes.

They bloom from May to October, and if there’s a lot of humidity, they will grow even better.

This plant is free seeding, which means that it might end up somewhere you didn’t plan it to be, so have that in mind.

There are no special requirements when it comes to caring for Forget Me Nots, just water it regularly and if needed fertilize twice in the season, once at the beginning and then again in the fall.

Another thing is to opt for a shadier space, so the flower retains moisture more easily.

35. Lenten Rose

lenten roses

And for the end, here is one pretty special-looking flower.

It’s actually not a rose species, it belongs to a perennial buttercup family.

You can find it in most colors, and also with different kinds of patterns – like differently colored margins, freckling, or veining.

It grows between 18 and 24 inches tall, and blooms during spring, as the name, suggests around Lent.

Lenten Rose is more than easy to grow.

It likes the soil to be moister during the winter, but besides that, it tolerates dryness pretty well.

They prefer being in a shady spot.

The soil should be kept moist only during long periods of hit and dry weather.

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