How to Care for Peony Plants in Winter

The primary summer time I lived in Alaska, my neighbors introduced over a bouquet of huge, lush pink flowers that I had by no means seen earlier than.

Set in vases in opposition to the inexperienced partitions in my house, I may’ve stared at them for hours.

I quickly realized that peonies (Paeonia spp.) are a giant deal right here in Alaska.

A lot of Alaskan gardeners develop these cold-hardy blooms, which thrive in USDA Hardiness Zones 3 to eight.

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However what to do throughout winter? How a lot dormancy do they want?

What number of hours of chilly temperatures? And is there something it’s best to do to maintain your peonies heat throughout winter?

On this information, you’ll study all the pieces you want to learn about the right way to care on your peonies throughout wintertime.

Right here’s what we’ll cowl:

There are three various kinds of peonies, all of that are long-lived perennials:

Herbaceous varieties, that are perennial shrubs that die down on the finish of the rising season and require a interval of dormancy and chilly earlier than blooming once more the next spring.

Tree varieties, which might develop as much as six ft tall, are deciduous shrubs and lose all their leaves within the fall, remaining bare-branched all winter.

Intersectional varieties, additionally referred to as Itoh peonies, are a hybrid cross of herbaceous and tree sorts and boast big flowers that sometimes bloom for as much as three weeks – longer than both herbaceous or tree sorts.

Relying on the cultivar, petals could be single, double, or semi-double.

You could find out extra about the right way to develop these beautiful flowers and extra concerning the totally different varieties in our rising information.

After studying the above descriptions, you will have gotten an inkling of what a peony plant does throughout wintertime.

That’s proper. It sleeps.

Right here’s the humorous factor concerning the stunning Paeonia: you’ll truly have to pay extra consideration to winter care if you happen to dwell in Zone 7 or 8 than you’ll if you’re in Zone 3 or 4.

Most varieties require between 500 to 1,000 chilling hours, which quantities to roughly 20 to 42 days of temperatures between 32 and 40°F.

As bud improvement is stimulated by chill hours, your crops want about one month of chilly wintertime climate as a way to bloom within the spring.

When you dwell in Zone 3 to five, you’re just about assured at the very least one month, if not six, of below-freezing temperatures.

I’m you, Alaska.

Peonies don’t thoughts the additional freezing time that comes with lengthy, chilly winters, however if you happen to dwell in Zones 6 to eight, you may battle to get a full month of almost-freezing temperatures.

However since peonies don’t develop from bulbs, it’s not a good suggestion to tug them up and attempt to pressure them indoors, as you may with spring-flowering bulbs.

So how are you going to maintain your peonies chilly sufficient by a Zone 6, 7, or 8 winter?

Worry not, for I’ve just a few suggestions.

Watch Your Planting Depth

Peonies develop from tuberous roots with “eyes” that develop new shoots.

For a Paeonia to thrive, it must be planted on the proper depth.

For these of you who dwell in Zones 3 to five, it’s greatest to plant the tuber in order that the little pink eyes from which the leaf stalks develop are two inches under the floor of the soil.

Are you able to see the little pink bud within the photograph under? That’s the “eye” of the plant.

It’s beneficial to plant it at precisely two inches deep. So get your ruler out to ensure the eyes get the planting depth they want.

For these of you in Zones 6 and seven, the eyes needs to be planted only one inch under the floor of the soil. And in Zone 8, simply half an inch under.

This appropriate planting depth provides it the most effective alternative to thrive and produce numerous beautiful, heavy blooms.

The rationale for the totally different planting depths is that peonies in heat areas shall be uncovered to cooler air temperatures, whereas these in chilly areas will keep tucked simply two inches down for a little bit of safety throughout a winter that will get as chilly as -40°F.

When and How you can Lower Them Again

Whether or not or not it’s best to minimize your crops all the way down to the bottom relies on what kind of peony you’re working with.

However whatever the kind, you’ll have to let all of the leaves die again naturally on the finish of the rising season.

As soon as they’re good and yellow or brown – it will usually be after the primary frost in your space – it’s time to chop the stems of herbaceous cultivars to about an inch above soil degree.

Throw trimmed vegetation away in a rubbish can as a substitute of on a compost pile.

This helps get rid of any ailments which may be lingering on the leaves from re-infecting the your crops the next spring.

You don’t should do something particular to tree sorts within the fall.

When you want to, it’s possible you’ll need to prune them flippantly within the spring to protect their form, however that’s not one thing to fret about but.

And as for intersectional cultivars, you’ll need to prune these again to about 4 to 6 inches in peak, leaving at the very least one or two progress nodules on every department.

In colder areas, nonetheless, it’s possible you’ll need to minimize intersectional peonies all the way down to about an inch above the bottom as you’d herbaceous varieties, because the buds won’t survive aboveground for the winter.

New stalks will develop within the spring, regardless.

To ensure you don’t by accident trample your treasured peony within the wintertime, use a plant marker to point the place it’s positioned.

Ought to You Mulch?

The following step in retaining your peony joyful throughout winter?

Sensible mulching habits, which generally means no mulching in any respect.

Since planting depth is essential to the well being of a peony, it is sensible that including even an inch of mulch on high of the soil may affect the plant’s capability to thrive and flower.

I as soon as made the error of spreading mulch across the crown, and it didn’t take care of that therapy.

So then I moved it to my flower mattress and left it un-mulched, the place it was a lot happier!

Till my canine dug it up. I believe she thought it was a stick I buried only for her.

Newly planted peonies in Zones 3 to five can profit from an extra-thin layer of breathable mulch – straw, for instance – to assist them keep cozy all winter lengthy, and supply a little bit of further safety.

However even if you happen to use straw, you don’t need to place it too near the stem of tree sorts.

Inserting mulch proper up in opposition to the stems can lure undesirable moisture within the soil across the tuberous root, inflicting the plant to rot or purchase ailments it wouldn’t in any other case succumb to.

These in Zones 6 to eight ought to keep away from mulching altogether.

You’re already planting the eyes simply an inch or half an inch under the floor of the soil in order that they’re uncovered to as a lot chilly air as doable.

Mulch would supply them with heat they don’t need.

Selecting the Proper Cultivar

Whereas they do greatest in chilly climates, these of you in Zones 7 and eight and even elements of Zone 9 may help guarantee success if you select cultivars which can be higher tailored to your hotter local weather.

Search for varieties which can be described as early blooming, and single or semi-double flowered.

These sorts are likely to do higher in heat climates. ‘Bowl of Magnificence’ is a lovely, early-blooming, single flowered cultivar to develop.

‘Bowl of Magnificence’

With mild pink petals and a cream heart, it’s certain to catch your neighbors’ consideration and captivate you every time you see it.

You could find tubers for fall-planting accessible at Eden Brothers.

One other of my favourite early bloomers is the stunning Itoh hybrid, ‘Julia Rose.’

‘Julia Rose’

With semi-double, aromatic petals in various levels of pink, crops can produce as much as 50 blooms in a single season.

Discover ‘Julia Rose’ for fall planting additionally accessible from Eden Brothers.

Winter Care Means Everlasting Blooms

Okay, perhaps not everlasting. However if you happen to take excellent care of your peony crops, they’ll provide the reward of longevity. It’s well-documented that these crops can dwell as much as 100 years previous.

So that they’ll most likely outlive you. What a present to the subsequent era!

Are you rising peonies? Do you’ve got any winter care tricks to share? I’d love to listen to from you within the feedback part under.

And for extra data on rising peony flowers in your backyard, take a look at these guides subsequent:

Pictures by Laura Melchor © Ask the Consultants, LLC. ALL RIGHTS RESERVED. See our TOS for extra particulars. Initially revealed September 28, 2020. Final up to date October 12, 2026. Product pictures by way of Eden Brothers. Uncredited pictures: Shutterstock.