Can You Plant Peonies After the First Frost?

Can You Plant Peonies After the First Frost? Absolutely!

If your first frost of fall is in the forecast, you might be wondering if you've missed your chance to plant peonies. Maybe you're waiting for your peony root order to arrive, or perhaps you've been meaning to divide an established plant or move a peony to a better spot in your garden.

Here's the good news: the first frost does not mean it's too late to plant peonies! In fact, fall is the best times of year to get peonies settled into their new homes.

Frost Is Not the Same as Frozen Ground

It's easy to assume that once frost appears on your lawn, the gardening season is over. But there's an important difference between a frosty morning and frozen ground.

Frost occurs when temperatures drop low enough for moisture to freeze on exposed surfaces, such as grass, leaves, and car windshields. It can happen even when the soil below the surface remains workable.

Frozen ground occurs when the soil itself freezes, making it difficult or impossible to dig and plant.

Even after several frosty mornings, your garden soil is likely still be warm enough to work with. As long as you can dig into the soil and it's not frozen solid, you can generally continue planting peonies.

In colder climates like Minnesota, the window for fall planting can feel short, but there's often more time than you think!

October Is a Wonderful Time to Plant Peonies

Fall planting gives peonies an opportunity to settle in before winter. As the plant enters dormancy, the roots can begin establishing themselves in the surrounding soil without the demands of supporting spring and summer growth.

Peonies are remarkably hardy perennials, and their roots are built to survive cold winters when planted properly.

At Hidden Springs Peony Farm, we ship our bare-root peonies during the month of October. This timing is intentional! Fall is an excellent season for planting peonies, giving gardeners an opportunity to get their roots into the ground before winter arrives.

If you're still waiting for your order, don't let a few frosty mornings worry you. Your peonies can still have plenty of time to get planted before the ground freezes.

Have Peonies of Your Own to Move or Divide?

Fall isn't just for planting new roots. It's also the ideal time to transplant or divide established peonies.

Planting newly purchased bare roots

Choose a location with well-drained soil and at least six hours of sunlight. Dig a hole wide enough to spread the roots comfortably, with the eyes (the small reddish or pinkish growing buds) positioned about 1–2 inches below the soil surface in cold-winter climates. Planting too deeply is one of the most common reasons peonies fail to bloom.

Backfill with soil, water thoroughly to settle the soil around the roots, and allow nature to take its course.

Transplanting an established peony

If your peony has outgrown its space or isn't thriving where it is, fall is a good time to move it. Dig carefully around the plant to preserve as much of the root system as possible, then replant it at the correct depth in its new location.

Don't be surprised if a transplanted peony takes a little time to settle in and return to its usual blooming performance.

Dividing peonies

Want to share a favorite variety with a friend or create more plants for your own garden? Fall is the time to do it! Carefully lift the plant, wash or brush away enough soil to see the root structure, and divide it into sections with healthy roots and at least three to five eyes when possible.

Replant your divisions promptly, water them in, and give them time to establish before winter.

A Few Tips for Late-Fall Planting

As the season progresses, a little extra care can help your peonies get off to a good start.

• Don't wait for the last possible moment. Plant as soon as you can while the soil remains workable.

• Water after planting. Give roots and divisions a thorough watering to settle the soil around them. If the soil is already moist, avoid overwatering.

• Plant at the proper depth. In cold climates, keep the eyes of herbaceous and intersectional (Itoh) peonies about 1–2 inches below the soil surface.

• Skip the fertilizer. Newly planted peonies don't need a heavy dose of fertilizer in fall. Focus on good soil, proper planting depth, and adequate moisture.

• Let winter do its job. Peonies need a period of winter dormancy to thrive. Once the ground freezes, a layer of loose winter mulch can help protect newly planted roots in particularly cold or exposed locations. Remove or loosen that mulch in spring so shoots can emerge easily.

Don't Let the First Frost Stop You!

Gardening always comes with a little uncertainty, especially when the weather starts turning cold. But the first frost is simply a sign that the seasons are changing, not a signal that all planting must stop.

If you're waiting for your Hidden Springs Peony Farm order, planning to move a favorite plant, or hoping to divide a peony to share with someone special, there's still a good chance you have time.

Keep an eye on your soil conditions, make the most of the remaining fall weather, and get those peonies planted while the ground is still workable.

Your future garden will thank you when those beautiful peony blooms return in spring!