A peony clump that returns each spring thick with buds has spent the winter resting in real cold, and New York supplies plenty. Garden peonies, tree peonies, intersectional hybrids and woodland peonies can all be grown in the state. The right pick depends on how hard winter bites in your corner of it.
Best Peonies to Grow in New York
These peony types can grow in New York and need a cold winter rest to flower. Bloom lands in May and June, depending on the type.
Garden Peony
The garden, or herbaceous, peony (Paeonia hybrids) is the classic clump. It dies back to the ground each year and rebuilds from the roots, so its stems never face the winter above ground.
That habit suits the cold parts of New York well, and it makes this the usual starting point for a first peony.
Tree Peony
The tree peony (Paeonia suffruticosa among others) is a woody shrub that keeps its stems through winter. Leave those stems standing, because a tree peony is never cut back to the ground.
It flowers ahead of the garden types, which makes it an early act in the sequence.
Intersectional Peony
Also sold as the Itoh, the intersectional peony is a hybrid of the garden and tree peonies. It blends the two parents and is the last type to flower.
Planting one stretches the show into June, after the garden types have finished.
Woodland Peony
The woodland peony (Paeonia japonica) carries white flowers and opens the season before the other types. It is the pick for an early start in the bed.
Growing these peony types together gives overlapping bloom from late spring into June.
New York — the year and the numbers
- State
- New York
- USDA zones
- 3b-7b
- Last spring frost
- March 23 to April 3
- First fall frost
- November 14 to November 27
- Annual rain
- 50 in
- Lawn zone
- cool-season
- Source
- NOAA NCEI U.S. Climate Normals 1991-2020, 32F freeze probabilities · New York City
How to Choose a Peony for a New York Garden
The choice comes down to how cold your winter runs and how much work you want each year. Peonies do best where winters are cold and may flower poorly in mild-winter climates, so the plant wants to sit where it will get its chill.
The rows below match common situations with the type that fits.
| Your situation | What suits it in New York | Why |
|---|---|---|
| Very cold winter | Garden peony | It dies back each year, so no woody stems face the cold |
| Little time for upkeep | Tree peony | It keeps its woody stems and is never cut back |
| Flowers over a long season | Woodland, tree, garden and intersectional peonies together | Each type opens at a different time, from late spring into June |
| Need for cold to set buds | Any type, planted in open ground | Peonies need a cold winter rest to flower |
A tree peony needs no seasonal cutback, while a garden peony dies back and is cut back after frost.
Which Peonies Suit Different Parts of New York
The USDA hardiness zone system runs from 3b to 7b across the state, so the same peony does not face the same winter everywhere.
- Adirondacks: Cold winters favor peonies, but ask for local advice before choosing a tree peony for an exposed site.
- Hudson Valley: Match the peony to the winter exposure and conditions in your own garden.
- New York City and Long Island: Plant in open ground where the peony can get the cold winter rest it needs.
Whatever the region, pick the type for the winter you actually get, not the one on the plant tag.
Peony Buying Mistakes to Avoid in New York
Tender Types in Cold Spots
A tree peony planted in an exposed mountain yard can lose stem growth to the cold, and with it the buds it would have flowered from. The cost is a season of leaves and no flowers.
In colder areas, ask your county extension office whether a tree peony suits the exposure in your garden.
Too Little Winter Chill
A peony that does not get its cold rest may flower poorly. In a warm microclimate, such as a pot kept indoors or a spot against a heated wall, the plant can leaf out and never bloom.
Plant it in open ground where winter reaches it fully, but remember that planting depth and recent transplanting can also affect bloom.
Pot Plants with Unknown Size
A peony bought in a pot can hide how large it will grow. Read the tag for adult height and spread before it goes into a bed, because crowding invites trouble later.
Plant it in late August through September, with the eyes near the soil surface, since a peony set too deep may bloom poorly or not come up. A newly planted peony may also skip bloom the first spring, so patience is part of the price.
Where to Get Peony Advice in New York
The state’s extension service answers plant questions. Its county offices know the local winters and soils, so start there when a variety is in doubt.
- Visit the Cornell Cooperative Extension site before ordering plants, to check what suits your area.
- Call your county office in late summer, ahead of planting in August and September, with a photo of the spot.
- Contact the office when a clump looks unhealthy or you are unsure what to cut.
Common Questions
Can You Plant a Peony in Spring in New York?
Yes, spring planting works as soon as the soil is workable, but it may delay flowers a year. Early fall remains the better window.
Can You Still Plant a Peony in October?
It can be done in October, though late August and September give the roots more time to settle before the cold.
When Should You Cut Back Peonies in New York?
Garden peonies are cut back after the foliage has died back, in November or December. Early spring, in March or April, is the other window.