If your peonies produce beautiful leaves but barely any flowers, the problem may have started months before bloom time. With peonies, planting depth, sunlight, drainage, and what you do after flowering can make the difference between a few disappointing blooms and a spectacular display.

Peonies are long-lived perennials, and once they’re established in the right spot, they can return and flower for many years. But they aren’t plants you want to keep moving around or planting too deeply.

1. Choose the Right Type of Peony

Before you plant, know which kind you’re buying.

The three main groups you’ll encounter are:

Herbaceous peonies die back to the ground in winter and return from underground buds in spring.

Tree peonies develop woody stems that remain above ground and can become substantial shrubs.

Itoh or intersectional peonies are hybrids between tree and herbaceous peonies. They have strong stems and large flowers but die back toward the ground in winter.

This matters because the plants don’t all have exactly the same growth habit or planting requirements.

2. Give Peonies Plenty of Sun

For most peonies, full sun is the safest choice.

Herbaceous and Itoh peonies especially perform best with plenty of sunlight. Tree peonies are more tolerant of some shade, and a little protection from intense afternoon sun can actually help their large flowers last longer.

If you’re choosing a new planting spot, look for somewhere that gets several hours of direct sunlight rather than a dark corner beneath a tree.

Too little light can mean weaker growth and fewer flowers.

3. Get the Soil Right Before Planting

Peonies aren’t particularly demanding, but they hate sitting in wet soil.

Choose a location with good drainage and reasonably fertile soil. Penn State recommends testing the soil before planting and notes that peonies prefer neutral to slightly alkaline conditions with excellent drainage.

If your garden soil stays soggy after rain, solve the drainage issue before planting.

That is much easier than trying to rescue a struggling peony later.

4. Plant Peonies at the Correct Depth

This is one of the most important peony-growing rules.

For herbaceous bare-root peonies, the pink or white growing buds—often called eyes—should sit only about 1–2 inches below the soil surface.

Don’t bury them several inches deep because you think deeper planting will protect the roots.

With peonies, it can have the opposite effect.

Too deep = lots of foliage and little or no flowering.

Position the eyes upward, cover them lightly with soil, and resist the temptation to pile extra soil or mulch over the crown.

5. When Is the Best Time to Plant Peonies?

For bare-root peonies, fall is generally the best planting time.

Penn State recommends autumn planting because it coincides with the plant entering dormancy, giving the roots time to establish before the following growing season.

If you’re buying a container-grown peony, follow the nursery’s planting recommendations and avoid planting when the ground is frozen or conditions are extremely hot and dry.

6. Give Mature Peonies Enough Room

A tiny peony can be misleading.

It may look like it has plenty of room when you first plant it, but mature plants can become surprisingly large.

Penn State notes that herbaceous peonies commonly reach around 2–4 feet tall, while tree peonies can reach 3–7 feet, with many types spreading several feet wide.

Give each plant enough room for mature growth.

Crowding plants together can reduce airflow and make maintenance more difficult.

7. Water Deeply While New Plants Establish

Newly planted peonies need consistent moisture while their roots establish.

But don’t keep the soil constantly saturated.

A deep watering is better than repeatedly sprinkling a tiny amount over the surface. For established perennials, about an inch of water per week is a useful general guideline, but rainfall, soil type, temperature, and drainage all affect what your particular plant needs.

Before watering, check the soil.

If it’s still moist below the surface, you may not need to water yet.

8. Don’t Overwater Your Peonies

A wilted plant doesn’t always mean it needs more water.

If your peony is sitting in heavy, constantly wet soil, adding more water can make the problem worse.

Peonies need excellent drainage and don’t tolerate consistently wet roots.

If the planting area stays wet after rainfall, consider improving the drainage or moving future plantings to a better location rather than trying to compensate with a different watering schedule.

9. Support Heavy Blooms Before They Flop

You’ve probably seen it happen:

Your peony finally opens those huge flowers you’ve been waiting for—and the stems immediately bend toward the ground.

Large, double-flowered peonies can become top-heavy, especially after rain.

Penn State specifically notes that herbaceous peonies with heavy flowers and tall stems may need support.

Install a peony ring or other support before the plant reaches full height.

Once the flowers are already flopping everywhere, trying to support them can become much messier.

10. Deadhead the Flowers After They Fade

Once the flowers fade, remove the spent blooms.

This keeps the plant looking cleaner and prevents energy from being directed toward seed production.

Cut the flower stem back while leaving the healthy foliage in place.

Don’t cut the entire plant down after flowering.

Those leaves are still working and helping the plant store energy for next year’s growth.

11. Keep the Foliage Healthy After Bloom

The flowers may be finished, but the plant isn’t.

Peony foliage continues supporting the plant after flowering, so leave healthy leaves intact through the growing season.

Instead of treating the post-bloom period as the end of the season, think of it as the time when the plant is preparing for next year’s flowers.

This is especially important if you want a mature plant to keep producing strong blooms year after year.

12. Cut Herbaceous Peonies Back in Fall

Once the foliage of an herbaceous peony has died back in fall, you can cut the stems down to the ground.

Don’t do this while the foliage is still actively green unless you’re dealing with a specific disease problem.

Tree peonies are different because their woody stems remain above ground.

Knowing which type you have prevents one of the most common pruning mistakes.

13. Don’t Pile Thick Mulch Over the Crown

Mulch can be useful for conserving moisture and moderating soil temperature, but don’t bury the peony crown under a thick layer.

Remember that those eyes need to remain close to the soil surface.

Keep mulch pulled away from the plant’s crown rather than creating a mound directly over it. General perennial-care guidance also recommends keeping mulch away from plant stems.

14. Be Patient With Young Peonies

This is the part impatient gardeners don’t always want to hear:

A newly planted peony may need time.

Don’t dig it up every season because it didn’t produce a huge bouquet immediately.

Peonies are long-lived plants, and establishing a strong root system takes time. Once established, they can remain productive for decades.

If the plant looks healthy but flowering is slow during its early years, give it time rather than constantly relocating it.

Why Isn’t My Peony Blooming?

If you’re getting plenty of green leaves but almost no flowers, check these problems first:

It’s planted too deeply.
This is one of the classic causes of poor flowering.

It doesn’t get enough sunlight.
Most herbaceous and Itoh peonies prefer full sun.

The plant is still young.
Give it time to establish.

The roots are sitting in wet soil.
Peonies need excellent drainage.

The plant is overcrowded.
Poor spacing can reduce light and airflow.

The foliage was removed too early.
Healthy leaves need time to support the plant after flowering.

Before adding more fertilizer, figure out which of these problems actually applies.

Why Are My Peony Buds Not Opening?

A peony covered in buds that never seem to open can be incredibly frustrating.

Start with the basics.

Is the plant getting enough sunlight?

Has the soil stayed excessively wet?

Did the plant experience unusual weather?

Are the stems being damaged or stressed?

Also, don’t panic if you see ants crawling around the buds. Ants are commonly attracted to the sugary nectar produced by peony buds and aren’t necessarily the reason a flower fails to open.

Do Peonies Need Fertilizer?

Don’t assume fertilizer is the answer to every disappointing peony.

Penn State’s general perennial guidance notes that most perennials don’t require heavy fertilization and that overfertilizing can produce excessive soft growth with fewer flowers. A soil test is the better starting point when you’re unsure about nutrient levels.

If your soil is already fertile and the plant is growing well, more fertilizer may not solve a flowering problem caused by planting depth or insufficient sunlight.

A Simple Peony Care Routine

Once your peonies are established, the routine is surprisingly simple.

Spring:
Watch for new growth, check moisture, and put support in place before heavy flowers develop.

During flowering:
Enjoy the blooms, water when needed, and support stems that begin to lean.

After flowering:
Remove spent flowers but keep healthy foliage.

Summer:
Keep the soil from becoming excessively dry, but don’t keep it waterlogged.

Fall:
Allow herbaceous foliage to die back naturally, then cut it to the ground.

Every year:
Check that the plant still has adequate sunlight, drainage, and room to grow.

That is much more important than constantly feeding, pruning, or moving the plant.

Final Thoughts

Peonies reward gardeners who get the basics right and then leave them alone.

Give them enough sun, good drainage, room to grow, and—most importantly—the correct planting depth. Support heavy flowers before they flop, keep the foliage healthy after blooming, and don’t panic if a young plant takes time to establish.

The biggest mistake is often trying to fix a peony with more fertilizer or more attention when what it really needs is the right spot and a little patience.

Once established, that patience can pay off with a spectacular display of blooms for many years.