Peony Companion Plants: 21 Plants To Grow With Peonies

Peonies are the pride and joy of many gardeners. Their massive, fluffy flowers are hard to beat! I especially love the look of them nestled into a garden bed or sharing space in an attractive container. They are so easy to layer together with other plants to create a lovely mosaic of blossoms throughout the garden season.

When I pair plants together, I think about what I am trying to achieve in the garden. Do I want a companion whose blooms will accent the other plant? Do I want one to bloom and the other quietly wait its turn? Am I playing with the structures and heights of the plants? There are many aspects to consider when pairing plants together.

Take the time to think about bloom time, the bloom colors, foliage texture and color, and the height of different plants and how they will play off one another in a garden setting. There are also many different types of peonies to consider when pairing with other plants. Keeping all those aspects in mind, here are some of the best peony companions to mix and match within your garden.

Allium

	botanical name Allium spp.
	sun requirements Full sun to partial shade
	height Variety dependent, usually 3′
	hardiness zones 3-9

Full disclosure, I am obsessed with alliums. I plant them in all my client’s gardens in the fall. One of the most underrated plants in my opinion. They are so simple to grow but provide a huge spring impact. Most perennials take three years to establish, but allium looks great the season after planting.

These flowers bloom before peonies, so it’s nice to plant the bulbs amongst peonies. The allium will grow upward and sprout a big purple (usually, but can be white, pink, or yellow, depending on the variety) lollipop.

The benefit of planting these peony companions is that the foliage that accompanies the long flower starts to die as soon as the flower blossoms. It looks kind of scrappy and ugly. If the allium is planted amongst the peonies, however, the foliage of the peony will hide this unsightly yellow foliage.

Alyssum

	botanical name Lobularia maritima
	sun requirements Full sun
	height 10″
	hardiness zones 5-9

If you want a classic cottage garden, this is a perfect combination. It is a low-growing, annual plant that is bursting with fluffy sweet smelling flowers. I like a long sweeping border of it outlining a garden bed. It is a perfect outline for underneath big peony plants with their large solid blossoms.

Plus, the smell of certain peonies along with the sweet alyssum’s floral scent together is just heavenly. Try pairing cheery yellow alyssum with red-colored peonies such as ‘Buckeye Belle’ or ‘Red Charm’ for a striking combination.

Annabelle Hydrangea

	botanical name Hydrangea arborescens ‘Annabelle’
	sun requirements Full sun to partial shade
	height 2-5′
	hardiness zones 3-9

Annabelle hydrangea is a late-season smooth hydrangea. But it gets fairly big and bushy, with large light green rounded leaves. The flowers are usually only starting to form when the peony is in bloom. They make a perfect leafy backdrop to the beautiful blooming peony. Later on, the hydrangea will steal the show.

While Annabelle hydrangeas are often touted as a shade plant, I actually think they are better suited to more sun. I’ve seen them grow happily in full sun, as long as they are given extra water. An eastern exposure full of peonies and Annabelles would be a lovely combination.

Clematis

	botanical name Clematis spp.
	sun requirements Full sun to partial shade
	height Up to 30′ tall
	hardiness zones 3-9

Clematis makes a fantastic green backdrop of foliage growing along a trellis or fence for a peony to be in front of. There are many different varieties of clematis that bloom at various times.

The vigorous alpine clematis blooms very early in the spring. The trusty ‘Jackmanii’ variety blooms later, and they may even bloom at the same time as peonies. Not that it matters if they bloom simultaneously or one after the other, the lush green backdrop looks great with peonies.

The added benefit for these peony companions is that they like cool shady feet. Peonies are up and out of the ground early on. They can provide shade to the bottom of clematis and protect it.

Columbine

	botanical name Aquilegia spp.
	sun requirements Partial shade
	height 2-3′
	hardiness zones 3-8

Peonies make great anchor plants in a garden. They are reliable, they grow larger over time (if they’re in the correct conditions) and will always stay put. With peonies firmly situated in the garden adding structure and stability to your garden, you can start playing with the garden nomads.

This of course depends on your garden aesthetic. If you are into clean and orderly lines, plant only plants that stay in their place. But if you like a blur of color and textures, adding flowers that wander and fill spaces is just the thing. 

This brings me to the perfect peony companion, columbine. Columbine is a semi-aggressive garden flower. It self-seeds and wanders around a garden. If they pop up in places they shouldn’t, they are easily pulled out.

The flowers can’t be described since there are so many unique varieties. Some are ruffled and hang down, some are double-flowered like a rose, and some are single-flowered coming in a wide variety of colors. They bloom in the spring around the same time as peonies and add interest and beauty to the garden wherever they pop up.

Coneflower

	botanical name Echinacea spp.
	sun requirements Full sun to partial shade
	height 2-4′
	hardiness zones 3-9

Coneflowers are an excellent option for pairing with peonies if you are looking to layer your garden with blossoms. Peonies’ bloom time is relatively short and it happens early in the season. While I do like strategically stacking some flowers together so they bloom in unison (like salvia and peony), I also like stacking perennials so there is always something in bloom.

If you only have plants that bloom when the peonies do, the big peony blossoms almost get lost in the clutter. I don’t mind having a flower or two to accent them, but too many blooms can appear chaotic.

This is where coneflowers come into play. It is only a plain little green perennial when the peonies are ready to explode. The stems have simple green pointed leaves and is medium height. It is not exciting or wonderful or anything when the peony blooms. Just a green background.

But, in late summer/early fall when peonies are just a fading memory, these peony companions take over with their huge daisy-like blossoms. They are spectacular and provide color later in the season, making them a great companion for peonies.

Creeping Jenny

	botanical name Lysimachia nummularia
	sun requirements Full sun to partial shade
	height 2-4″
	hardiness zones 3-9

Creeping Jenny, or Lysimachia, is a vigorous ground cover that acts as a natural mulch for gardens, keeping the moisture in and the weeds down. It adds a layer of green at the base of peony plants. This is a great plant where it doesn’t invade natural areas.

My favorite as a peony companion is golden Lysimachia, which is a bright yellow color and really adds a pop of contrast to the even green peony foliage. It really adds a lushness to gardens.

Daylily

	botanical name Hemerocallis spp.
	sun requirements Full sun
	height 2′
	hardiness zones 3-9

Daylilies make great companions to many plants, including peonies. Their grassy mounds of foliage add a soft texture to garden borders. They usually bloom slightly after peonies (although this is variety-dependent). So after the peony blossoms start to fade, the long stalks of daylily blossoms are ready to take over.

There are many unique varieties of daylilies available now. So if their orange color or aggressive doesn’t suit your garden filled with soft pink peonies and light blue delphinium, try a soft pink variety of daylily. The ‘romantic rose’ daylily has large ruffly pink blossoms that fit in perfectly with a whimsical garden.

Hosta

	botanical name Hosta spp.
	sun requirements Partial to full shade
	height 6″-3′
	hardiness zones 3-9

This combination may be a bit more unexpected since hostas are normally thought of as shade plants, whereas peony is the queen of the sun. But they actually can meet somewhere in the middle.

Hostas, especially the lighter green foliaged ones, can actually take a fair amount of sun. ‘Sum and Substance’, or ‘Dancing Queen’ are examples of lighter foliage hostas fit for the sun.

Peonies actually do not enjoy being in the blazing heat of the day. A part-sun location will keep their blooms intact for longer. So, finding a part sun location, maybe an eastern exposure is a happy medium for both perennials.

I love the variation in height that a peony rising out of a hosta garden provides. Also if staggering blooms are what you are after, a peony will bloom in the late spring/early summer and then a hosta will shoot up stalks of lavender flowers in the mid-late summer.

Iris

	botanical name Iris spp.
	sun requirements Full sun
	height 4′
	hardiness zones 3-9

If a profusion of blooms is what you are after, layer peonies with irises to have a spectacular display of blooms. The iris usually blooms slightly before, and during the peonies’ bloom (this depends on variety and sun exposure).

If you get it just right, the irises will be slowly fading as the peonies are just opening, with considerable overlap. The intricate shape of an iris blossom contrasts perfectly against a flowy peony flower.

When their bloom times are over, the hard spiky iris foliage stands out against the rounded lacy foliage of the peony. Add some later summer flowers in to continue the interest (delphinium, shasta daisy, etc.).

Larkspur

	botanical name Delphinium spp.
	sun requirements Full sun to partial shade
	height 6′
	hardiness zones 3-7

Larkspurs are considered a type of delphinium. Delphinium and peonies are made for each other! This is a classic pairing in an English garden. Plant peonies in front of the delphinium. They don’t always bloom at exactly the same but delphinium provides a perfect backdrop of lacy foliage behind the peony for its floral show.

After the peony finishes its bloom, the delphinium takes over and steals the show with its long stalks of flowers. Depending on your varieties of peony and delphinium, and their sun exposure, there might be a little or a lot of overlap of blooms. They truly are a match made in heaven.

Lupine

	botanical name Lupinus spp.
	plant type Perennial
	sun requirements Full sun
	height 1-4′
	hardiness zones 4-8

Be careful when growing lupine, they can be aggressive and unwanted in some areas. Make sure to deadhead the seed pods. However, there is nothing quite like the deeply lobed foliage of lupine and its upright plumes of flowers in all sorts of colors.

When it comes to planting lupine with peonies, they make a perfect pair. The lupine’s tall perennial blooms are spectacular and will happen just before the peonies start to open. They both have breathtaking flowers that steal the show. Having one bloom right after the other keeps your garden visually interesting.

The foliage of both plants has interest too. Lupines have deeply lobed leaves and peonies have lacey lobed leaves. They look great in the garden together.

Masterwort

	botanical name Astrantia spp.
	sun requirements Full sun to partial shade
	height 1.5′
	hardiness zones 4-8

Masterwort is a lovely perennial. It can get to be around the same size, or slightly bigger, than a peony. It has these small fireworks of flowers that are so intricate and delicate. I am constantly snapping pictures of them in my garden!

These flowers bloom around the same time as peonies, but their blossoms stick around much longer than fleeting peonies’ petals. They both come in soft delicate colors of pinks and whites. However, the masterwort flowers are small and spikey, which is a great contrast to the full fluffy peony blossoms. They also both have interesting, deeply lobed foliage, which looks similar and blends together nicely.

Monkshood

	botanical name Aconitum spp.
	sun requirements Full sun
	height 3-4′
	hardiness zones 3-7

Monkshood is a great alternative to delphinium. I almost like it more. It stands tall and sturdy and doesn’t require any staking. The same lacy tall foliage as delphinium surrounds it, which makes a great green backdrop for peonies.

The blooms appear later in the summer after the peonies have bloomed. It has tall stalks of flowers that come in purple, white, or pink. The flowers themselves look like little hooded monks (as their name suggests!).

Monkshood is a great option for gardens that are plagued with critters such as deer or rabbits. They are very poisonous and deter everything from munching on them.

Painted Daisy

	botanical name Tanacetum coccineum
	sun requirements Full sun to partial shade
	height 2-3′
	hardiness zones 3-7

Painted daisy is lovely with big colorful flowers that rise out of airy ferny foliage. They typically come in shades of pink and red. Peonies and painted daisies bloom around the same time and are around the same size, only perhaps slightly smaller.

The simple flower structure of the daisies makes a nice complement to the more intricate folds and ruffles of a peony. I also like the ferny texture foliage of the painted daisy. It is light and airy next to the solid leaf structure of a peony.

Pansy

	botanical name Viola tricolor var. hortensis
	sun requirements Full sun to partial shade
	height 8-10″
	hardiness zones 2-9

Pansies are reliable bloomers and their large flat flowers are a perfect contrast to the big fluffy peony flowers. Both pansies and peonies like cool climates and a nice cool spring garden. They will both fizzle out in conditions that are too hot.

I personally don’t like going too crazy with my color combinations when it comes to planting with peonies. The simplicity and elegance of the large solid peony blossoms lose some of their beauty when there is too much other color ‘noise’ around.

Opting for a solid-colored pansy such as Matrix White or Matrix True Blue is preferable to enhance the beauty of the peony without distraction. Violas are another lovely option. The small flowers create a blanket of groundcover for the peonies to rise out of. White violas and pink peonies for the win!

Rose

	botanical name Rosa spp.
	sun requirements Full sun to partial shade
	height Variety dependent
	hardiness zones 3-11

Roses may be fussy and require a bit more maintenance. But when you get it right, the blooms of peonies and roses coexist in perfect harmony. I’ve seen delicate frilly light pink roses next to peonies of the same color and can hardly tell the difference.

Except that the roses will keep on blooming and the peonies are larger and more spectacular when they bloom.

Layer them in between each other to create a seamless blossoming effect. Play with shades of pink, red, and white in the roses and/or peonies to really amp up the contrast.

Salvia

	botanical name Salvia spp.
	sun requirements Full sun
	height 2-5′
	hardiness zones 3-10

I love salvia and peonies together. The long deep purple spikes of flowers look especially excellent next to light pink varieties of peonies, such as the very popular Sarah Bernhardt variety.

Salvia and peonies bloom at the same time and are similar similar heights making them a striking floral combination. They even look great together in bouquets. This is a winning combination. Did I mention bees just love salvia? I can hear salvia in the summer, buzzing with the little pollinators.

Sea Holly

	botanical name Eryngium spp.
	sun requirements Full sun
	height 1-8′
	hardiness zones 2-10

This peony companion is a bit unexpected, but it totally works. I just discovered this flower as a companion for peonies in a perennial bed. The full structure of the plant was up when the peonies were blooming.

When the sea holly is just starting to produce its spiky bloom, peonies are finishing up. It is colorless and only provides structure while the peonies steal the show with their huge blossoms.

Then, once the peony stops blooming, the sea holly blossoms their lovely bluish purple hue. It’s unexpected and quite lovely. Another great thing about sea holly is that the blooms last a long time in a garden, unlike a peony’s short show.

Snow in Summer

	botanical name Cerastium tomentosum
	sun requirements Full sun
	height 6″-1′
	hardiness zones 3-8

Snow in Summer is a lovely perennial ground cover with velvety silver foliage. It looks great at the foot of a peony. It blooms a carpet of snow white flowers around the same time as the peony. This combination looks so romantic and whimsical.

These peony companions are especially nice when planted with darker flowered peonies, such as ‘Kansas’, ‘Karl Rosenfield’, or ‘Chocolate Soldier’. The contrast of the foliage looks great at all times even when the plants aren’t in bloom.

Sweet Woodruff

	botanical name Galium odoratum
	sun requirements Partial to full shade
	height 6-12″
	hardiness zones 4-8

Sweet woodruff is a lovely ground cover. It has small glossy delicate foliage that looks great planted at the base of peonies as a ground cover. It also acts as a natural mulch to keep the ground moist and the weeds down.

This plant bursts tiny white star flowers around the same time as the peonies flower, sometimes earlier depending on location and variety. The dense small flowers are a perfect accent to the big bold peony. This is one of my favorites, and I think underrated ground covers.