Have you ever seen a peony? They are known as the “king of flowers” in China for a good reason. With their big, fluffy, and often fragrant blooms, they can make any garden feel like a magical place.
For centuries, these flowers have been a symbol of good luck, wealth, and honor, and they have been grown in gardens all over the world.
The best part is once you get them planted in the right way. They can live for a very long time. Sometimes even for a hundred years.
This guide will teach you everything you need to know to make your peony happy and full of flowers all summer long.
Understanding Your Peony: The Three Main Types
Before you start planting it is important to know the types of Poney. This will helps you to know what kind of peony you have.
There are three main types, and each one grows a little differently.
Herbaceous Peonies:
This is the most common kind you see in gardens. They are plants that die back to the ground every single winter.
In the spring, new stems grow up from the roots, reaching about 2-4 feet tall. These are the ones that have those huge heavy flowers that sometimes need a little support to keep from flopping over after a rainstorm.
Tree Peonies:
These are not what you might think of as a “tree.” They are actually a woody shrub. They lose their leaves in the fall but not the woody stems.
They can grow quite large, up to 5 feet tall and wide. Their flowers are often bigger than those on herbaceous peonies and appear a little earlier in the spring.
Intersectional (Itoh) Peonies:
These are a mix between herbaceous and tree peonies. They were created by crossing the two.
They have the bushy shape and beautiful leaves of a tree peony but die back to the ground in the winter like a herbaceous one.
Step-by-Step Planting: The Most Important Part
This makes them very tough, and they have strong stems that don’t usually need support. They are a great choice for many gardens.
Getting your peony in the ground correctly is the biggest secret to success. A peony will live for decades, so it’s worth taking your time with this step.
1. Pick the Perfect Spot
Peonies are a lot like people and also love the sun. They need at least 6-8 hours of direct sunlight every day.
Without enough sun, your plant will have weak stems and very few flowers. Think of a sunny spot in your garden that is not covered by a tree or building.
Important: Do not plant a peony near a big tree or a shrub. Their roots will fight for water and food, and your peony will almost always lose. Also, plant them in a place where you will not need to move them for a long time. They do not like being moved once they are settled.
2. Prepare the Soil
Peonies love rich soil that lets water drain away easily. If water sits around the roots for too long, they will rot and the plant will die. To prepare the spot:
Dig a large hole, about 2 feet wide and 2 feet deep.
Take the soil you dug out and mix it with some good compost or well-rotted manure. This adds important food for the plant and helps the soil drain better.
You can also mix in a handful of bone meal, which is a great organic fertilizer that helps the roots grow strong.
3. The Number One Mistake to Avoid
This is the most important rule of planting peonies: Do not plant them too deeply.
Peonies grow from a part of their root system that has small, red or pink buds called “eyes.” These eyes are where the new stems will grow from in the spring.
When you plant a bare-root peony (which is just the root with no soil), the eyes should be no more than 1-2 inches below the soil surface.
This is the most common reason a peony won’t bloom. If you plant them too deep, they will put all their energy into trying to grow to the right depth and will not make flowers.
If you bought a potted peony, simply plant it at the same depth it was in the pot. Do not add extra soil on top of the crown.
Once you have the plant in the hole at the right depth, gently fill the soil back in around the roots and press it down with your hands. Give the plant a little water to help the soil settle.
Peony Care: A Guide for Every Season
Once your peony is in the ground, it is a very easy plant to take care of. Here is a simple guide for each season.
Spring: The Growing Season
Feeding: In early spring, just as the new red shoots are coming out of the ground, give your plant some food.
Use a low-nitrogen fertilizer (like a 5-10-10 or a bulb fertilizer). Too much nitrogen will make the leaves grow big and green, but you will get fewer flowers.
Spread the fertilizer around the plant, but keep it a few inches away from the stems so you do not burn them.
Watering: Water your plant well in the first year to help it get used to its new home. After the first year, peonies have very deep roots and usually do not need extra water unless it is very dry for a long time.
Mulching: You can put a layer of mulch (like wood chips or shredded bark) around the plant.
This helps keep the soil moist and keeps weeds away. Just make sure the mulch is not touching the stems of the plant.
Staking: Some types of peonies have huge flowers that are too heavy for their stems. You can use a special peony ring or a small cage to support them as they grow.
This will keep the flowers from falling onto the ground after a heavy rain.
Summer: The Blooming Season
Deadheading: Once a flower has faded and turned brown, you should cut it off. This is called deadheading.
It helps the plant save its energy for growing strong roots instead of making seeds. Just use a clean pair of scissors or clippers to cut the flower off right above the first set of leaves.
Ants: You will see ants on your peony buds, but do not worry. Ants are completely harmless. They are just drinking the sweet nectar from the buds and are not needed for the flowers to open. In fact, they can sometimes help by eating other bad bugs.
Pests: Besides ants, other pests like aphids can sometimes show up. You can easily get rid of them by simply spraying the plant with a strong spray from a garden hose. You can also use a special spray made from a little bit of mild soap and water.
Fall: Preparing for Winter
Pruning: After the first frost in the fall, the leaves will turn brown and die. This is the best time to prune your plant.
Use a clean pair of clippers to cut all the stems of the herbaceous peony down to the ground.
This helps prevent diseases from hiding in the dead leaves over the winter. Do not cut the woody stems of a tree peony.
Dividing: Peonies can live for decades without being divided. But if your plant is more than 10 years old and is not blooming well, it might be time to move it.
The best time to divide and move a peony is in the fall. You can dig up the whole plant, wash off the dirt, and use a sharp knife to cut the root into smaller pieces.
Make sure each new piece has at least 3-5 eyes on it. Then, you can replant the pieces in a new spot.
Winter: Resting
Peonies are very hardy and can handle the cold winter without a problem. They need to have a cold, chilling period to bloom well in the spring. Just leave them alone, and wait for the new shoots to pop up when the weather gets warm again.
Making Your Peonies Last as Cut Flowers
Peonies are one of the most popular flowers for a bouquet. Here is how to pick them and make them last a long time in a vase.
When to Cut: The best time to cut a peony flower is in the morning, right before the sun gets too hot.
Look for buds that are still closed but feel a little soft like a marshmallow when you gently squeeze them. This is called the “marshmallow stage.” If the buds are hard, they might not open.
How to Cut: Use a sharp knife or clippers to cut the stem at a 45-degree angle. Leave at least three leaves on the plant on each stem you cut from.
This is very important because the plant needs its leaves to get energy for next year’s blooms.
How to Make Them Last: As soon as you cut the flowers, put them in a bucket of cool water.
When you bring them inside, re-cut the stems under running water and put them in a clean vase with flower food. Change the water every day to keep the flowers fresh for a week or more.
Common Problems and Solutions
Even with the best care, your plant might have some problems. Here are a few common ones and how to fix them.
Why Isn’t My Peony Blooming? This is the most common problem. It is almost always due to one of these reasons:
Planted Too Deeply: Remember, the eyes need to be no more than 1-2 inches below the ground.
Not Enough Sun: Your plant needs at least 6 hours of sun a day. If a tree or a house is blocking the light now, you might need to move it.
Too Young: A newly planted peony might only grow leaves for the first year or two while it is getting its roots established. Be patient! It will bloom when it is ready.
Too Much Nitrogen: If you used a fertilizer with too much nitrogen (the first number on the bag is too high), your plant will look healthy and green but will not have flowers.
My Flowers Are Flopping Over.
This happens with some of the bigger, heavier flowers. You can prevent this by using a peony support ring in the spring. Place it over the plant when the new shoots are still small.
The Leaves Have Spots:
This is usually a disease called botrytis, or gray mold. It happens when the weather is wet and humid. To stop it, make sure there is good airflow around your plant. Cut off and remove any dead leaves or stems in the fall so the disease does not hide there.
Growing peonies is a great way to add timeless beauty to your garden. By following these simple steps, you can enjoy their amazing flowers for many, many years to come.
Frequently Asked Questions (FAQs)
Q1. When is the best time to plant a peony? The best time to plant a bare-root peony is in the fall, a few weeks before the ground freezes. Potted peonies can be planted in the spring.
Q2. Do I need to fertilize my peony? Yes, but do it carefully. Use a low-nitrogen fertilizer (like a 5-10-10) in the early spring. Do not use too much, as it can cause the plant to grow leaves but no flowers.
Q3. Why are there ants on my peony buds? Ants are not a problem. They are just drinking the sweet nectar from the buds. They are not needed for the flower to open and they will not harm your plant.
Q4. Can I grow peonies in a pot? It is not recommended to grow peonies in a pot for a long time. They have very deep roots and do best when they are planted in the ground where they can spread out.
Q5. How do I make my peony live for a long time? The most important things are to plant it at the right depth, give it plenty of sun, and not overwater it.