The Peony Guide: Everything You Need to Know About Growing, Harvesting & Loving Them

There’s something about peonies that makes people absolutely lose their minds.

Maybe it’s the giant blooms. Maybe it’s the fragrance. Maybe it’s the fact that they bloom for such a short window that they feel fleeting and special in a way few flowers do.

Whatever it is, peony season feels a little magical every single year.

For me, the love started from FOMO. I could not grow peonies when I grew up in L.A. Peonies are a cold loving perennial and couldn't handle the hot Southern California summers. I convinced my mom to buy a Sarah Bernhardt peony growing up and that poor thing never bloomed. When we moved east, she dug it up and brought it along and it is so happy.

How can one plant survive decades and be bicostal? Peonies are tough! And they are long lived. They don't want to be moved but the absolutely can be successfully.

As long as you have sun, space & adequate water, they will thrive with only a once a year cutback.

That said, there are definitely a few things worth understanding before planting them.

What Exactly Is a Peony?

Peonies are long lived perennial flowering plants known for their enormous blooms, lush foliage, and subtle fragrance. Most of the modern cultivars originate from varieties that were bred starting long ago in China.

There are three main categories of peonies:

Herbaceous Peonies

These die back fully to the ground each winter and regrow every spring. This is the type most home gardeners are familiar with. They often need staking but you can choose varieties bred for the landscape.

Tree Peonies

These form woody stems that remain above ground year-round and produce enormous flowers. These can be a great option for those with a bit less sun.

Itoh (Intersectional) Peonies

A cross between herbaceous and tree peonies. They tend to have stronger stems, massive blooms, and a longer bloom period. Bartzella, a bright yellow Itoh peony ,has become popular and I often find at big box stores. These are generally more stout and wide and don't need staking.

I grow all 3 types, but definitely have the most herbaceous for cut flowers. The other two are just for my own garden enjoyment.

The Biggest Misconception About Peonies

One of the biggest misconceptions is that peonies are difficult.

Honestly, mature peonies are often easier than roses, dahlias, or hydrangeas once they’re settled in.

The harder part is in planting in the right spot and having some patience.

Peonies are a long game flower. The first few years can feel slow, but once established, they become more impressive every single season.

Choosing the Right Spot & Planting

Sun Requirements

Peonies generally prefer full sun, at least 6+ hours daily. 

In hotter climates, some afternoon shade can help preserve blooms longer.

Tree peonies are the exception preferring morning sun.

If you have a peony that doesn't flower, it could be due to lack of sun.

Soil

They prefer:

• Well-draining soil
• Rich organic matter
• Neutral to slightly alkaline pH
• Regular moisture but not soggy soil.

The biggest issue peonies dislike is sitting in wet soil.

Planting Depth Matters

This is the big one.

Peony eyes (buds) should generally only be planted about 1–2 inches below the soil surface in cold climates.

Planting too deeply is one of the most common reasons peonies fail to bloom.

When it doubt, the shallower the better! Remember peonies can even be grown in parts of Alaska because they are so cold tolerant.

How Long Do Peonies Take to Establish?

This is where expectations matter.

Year 1:

• Mostly root establishment
• Limited blooms possible
• Don't harvest and deadhead blooms after flowering
• Likely don't need to stake

Year 2:

• More busy growth
• should flower
• Again don't harvest or just cut very short stems to bring inside
• Make need to stake if it has several blooms and is a cultivar that needs staking

Year 3+:

• This is when peonies really begin showing their potential
• You should see 3+ blooms and eventually 20+ in later years
• You can harvest longer stems but leave as much foliage on the plant as possible

Mature clumps can eventually produce dozens of blooms per plant.

Do Peonies Need Support?

Sometimes yes — especially large double varieties.

Rain can absolutely flatten giant blooms overnight.

Many gardeners use:

• Peony rings - Easy to add at any point if you forget
  
• Grow-through supports - great if you get them on early
• Strategic companion planting (for example I have a peony behind a juniper shrub. It cant fall forward thanks that pairing

Itoh peonies often hold themselves upright better than traditional herbaceous types.

Look for varieties grown for landscape purposes if you don't want to stake peonies. There are lots! They do tend to be single. I don't stake any peonies in my yard because I harvest the ones that flop and enjoy inside.

The Truth About Peony Bloom Time

One of the hardest parts about peonies is how short the bloom window is.

A single variety may only bloom for about 7–10 days depending on weather.

The good news is you can extend the overall season by planting:

• Early varieties - My favorite is Little Red Gem. Tree peonies also tend to bloom earlier
• Early mid-season varieties - usually these are red or hot pink.
• Mid-season varieties - I love some of the unusual forms in this category like bowl of beauty or top brass
• Late-season varieties - the largest of the peonies. The classic is Sarah Bernhardt
• Itohs for additional bloom overlap

Cool weather dramatically extends bloom life. Heat can make peonies blow open almost overnight.

If you are really into peonies, you can add parasol umbrellas over them to enjoy a longer bloom! I do this for my tree peonies that get afternoon sun.

Season	Name	Photo
Very Early	Little Red Gem
Early-Mid	Coral Charm
Mid	Bartzella
Late	Sarah Bernhardt

Best Peonies for Cut Flowers

Not all peonies perform equally well as cut flowers.

Some favorites for cutting include:

• Sarah Bernhardt
• Coral Charm
• Duchesse de Nemours
• Bowl of Beauty
• Festiva Maxima
• Karl Rosenfield

Good cut flower traits include:

• Strong stems
• Productive plants
• Good vase life
• Reliable opening
• Fragrance
• Transport durability

When to Harvest Peonies

The ideal harvest stage is often called the “marshmallow stage.”

The bud should:

• Feel soft like a marshmallow
• Show color
• Not be rock hard
• Not already opening fully
• You can look up a specific variety since some have slightly different needs.

Harvesting too early means buds may not open. Too late and vase life drops quickly.

Can You Store Peonies in a Cooler?

Yes and this is one of the coolest things about peonies.

Properly harvested peonies can often be dry stored in refrigeration for weeks, allowing growers and florists to extend the season significantly.

Basic process:

1. Harvest at marshmallow stage
2. Remove foliage
3. Wrap stems dry
4. Refrigerate near 34–36°F

Personally I am usually just storing for a week for CSA bouquets so I store them in water in a spare fridge and that works just fine. What helps is getting Chrysal transport solution to add to the water.

Common Peony Problems

Ants on Buds

This is completely normal and actually NOT a problem. It does not harm the plant or flower at all. The ants are enjoying the sweet liquid that peonies excrete before blooms.

Botrytis

A fungal issue that can impact stems and buds, especially in wet conditions with poor airflow. This sets in in wet springs. Make sure peonies are not overcrowded.

It helps to clean up the peony foliage in the fall. That is one of the few plants I do clean up before winter. I dont compost the foliage. I trash it.

Lack of Blooming

Usually caused by:

• Planting too deep
• Too much shade
• Immature plants
• Over-fertilization with nitrogen

Flopping

Often caused by:

• Heavy rain
• Large double blooms
• Lack of support

Should You Fertilize Peonies?

Peonies generally do not need heavy feeding. In fact, I almost never feed mine except for a yearly mulch.

Over-fertilizing can actually reduce flowering.

A light annual application of compost or balanced organic fertilizer like espoma is usually enough for established plants.

Are Peonies Worth It?

ABSOLUTELY! As long as you have sun and space for them to thrive.

They’re one of the few flowers that genuinely get better with age.

They ask for patience upfront, but once mature, they become one of the most rewarding plants in the garden.

And honestly, there are very few flowers that stop people in their tracks the way peonies do.