How Fast Do Peonies Grow and What to Expect from Your Plant

Peonies can take a few years to establish themselves, but once they do, they're a low-maintenance addition to any garden.

They typically grow to be around 3-5 feet tall, with some varieties reaching heights of up to 6 feet.

Planting and care are crucial for peonies to grow well. To start, plant grafted bare root tree peonies deeply, with the graft union 3-4" below the soil.

Don't overwater newly planted peonies, as this is the biggest cause of failure. It's essential to give them time to settle in, as they are slow starters and may appear to make little growth in their first season.

Tree peonies need space to grow, so plant them at least 4-5 feet apart. Bush and itoh peonies can be spaced about 2-3 feet apart. Give them room to breathe and grow.

To encourage faster growth, choose a location with at least 6-8 hours of sunlight daily. Peonies prefer well-drained, fertile soil with a neutral to slightly acidic pH. You can improve soil richness by mixing in some compost before planting.

For more insights, see: Best Soil for Star Jasmine

Here are some tips to support faster and healthier growth:

Cover with light mulch in colder regions, but make sure the crown isn’t buried. Good air circulation is just as important as rich soil.

Peonies are slow starters, but they're made to last. They typically take 2 to 3 years to begin flowering consistently.

In the first year, the plant focuses on growing roots underground, and you might only notice a handful of leaves poking up through the soil. Some peonies might produce a small bloom or two in the second year, but it's still early. This waiting period isn't a sign of failure – it's part of the peony's natural rhythm.

Here's a rough outline of what to expect:

Keep in mind that healthy divisions with multiple eyes may flower slightly sooner, especially if planted at the right depth and in full sun.

Peony roots start growing within a few weeks after planting, even if you don't see any leaves or shoots yet. This underground activity begins in the weeks following planting.

The process is quite different from seeds, which sprout visibly above ground. Peony roots quietly prepare for months before showing signs of life.

Root activity starts in early fall, when peonies are typically planted. This is the best time for peonies to develop their roots underground.

To give your peonies the best chance to settle in, avoid moving or reworking the soil around them too soon. This will allow them to establish a strong foundation for future growth.

Here's a rough timeline to keep in mind:

Expect a slow start when planting bare-root peonies, as they typically take 2 to 3 years before they begin flowering consistently. In the first year, the plant focuses on growing roots underground rather than producing flowers.

Some peonies might produce a small bloom or two in the second year, but it's still early, and the plant is still putting most of its energy into growing strong roots and sturdy stems.

Healthy divisions with multiple eyes may flower slightly sooner, especially if planted at the right depth and in full sun. Make sure those eyes are planted no deeper than 1 to 2 inches below the soil surface, as deeper planting delays blooming.

Here's a rough estimate of what to expect from peony growth:

Patience is a virtue, especially when growing peonies. It takes some time for a young plant to get well established, as they produce an enormous root ball that can measure 3 feet in diameter and weigh well over 80 lbs.

A newly planted peony will usually spend at least two growing seasons developing a strong root system. During this time the plant may or may not produce flowers.

Peonies are long-lived plants that can thrive for a century or more, but they need a substantial root ball to fuel flower production. Once there’s a substantial root ball, you will get more and more blossoms each year.

It's essential to be patient and not expect flowers right away, as it can take time for the plant to establish itself.