Spring planning: When is the best time to plant peonies?

When is the best time to plant peonies? This is a question that many garden enthusiasts ask. These beautiful flowers add colour to any garden. However, planting and caring for peonies involves more than you might think. With the right knowledge, you can enjoy full blooms and healthy plants for years. In this blog, you will learn exactly how to plant, care for, and propagate peonies.

Types of peonies and their differences

Peonies can be broadly divided into two groups: herbaceous peonies and tree peonies. Herbaceous peonies die back to the ground in winter and grow back in spring. Tree peonies have woody stems that remain above ground in winter. They often grow much larger than ordinary peonies. Tree peony flowers appear from mid-April to June and are often red or yellow. An adult tree peony can grow up to 1.75 metres tall, making it a real showstopper in the garden.

Herbaceous peonies are smaller and very suitable for borders or mixed planting. Both types are beautiful, but differ in height and maintenance. 

The right time to plant peonies

Peonies can be planted in both autumn and spring. Autumn is often preferred, as the plant can establish roots throughout the winter. This gives the peony a strong foundation in spring and increases the chances of abundant blooms. However, spring is also a good time, provided the soil is not too wet or cold.

When planting in spring, it is important to water the plant thoroughly immediately. This helps the roots establish themselves more quickly. In autumn, extra watering is less necessary, but you should still check the soil.

How to plant peonies: in the ground or in a pot

Peonies can be planted both in the ground and in a large pot. Both methods have their advantages. In the ground, peonies have plenty of room to grow. Not everyone has space in the ground. By planting them in a pot, you can still enjoy their beautiful, colourful flowers. You can also easily move them around with the pot. Below, both options are explained step by step.

Planting peonies in the ground:

• Dig a hole 10 to 15 centimetres deep and twice as wide as the root ball.
• Loosen the soil so the roots can grow well.
• Mix the excavated soil with compost or manure to improve the soil structure.
• Place the rootstock in the hole. Make sure the ‘eyes’ are no deeper than 5 centimetres below the soil.

·         Leave enough space between the plants, approximately 90 to 120 centimetres. This gives them room to develop fully and helps prevent mildew.

·         Fill the hole again and firm the soil down well.

·         Water the plant when planting so that the roots can immediately absorb nutrients. Water regularly during dry periods, but prevent the soil from becoming waterlogged.

Planting peonies in a pot:

• Choose a large pot at least 40 to 50 centimetres in diameter with drainage holes.
• Fill the pot with airy potting soil and add sharp sand or perlite for good drainage.
• Place the rootstock in the pot with the ‘eyes’ no more than 5 centimetres below the soil.
• Fill the pot with potting soil and firm the soil down gently.
• Place the pot in a sunny spot where the plant receives at least six hours of light.
• Water regularly, but prevent the soil from remaining constantly wet.

Location and sunlight for peonies

A peony grows best in a bright location. Ideally, the plant receives at least six hours of sunlight per day. The more sun, the more abundant the blooms. If you place the peony in a shaded spot, fewer flowers will appear.

Also, make sure the soil drains well. Peonies do not like to sit in water. Choose loose soil and avoid places where water collects.

Pruning peonies in autumn

September and October is the time to cut back your peonies. Remove old and discoloured stems. Always leave at least two strong stems so the plant can grow again the following year.

Has the peony grown too large? Then you can remove older branches. Leave the younger stems. This way, it will bloom fully again soon.

When do peonies bloom?

Peonies bloom from mid-April to mid-June. During this period, you can enjoy beautiful, large flowers that give the garden a cheerful appearance. Depending on the variety, the colours can range from white to deep red.

During this period, provide plenty of water and keep weeds away from the plant. This gives the roots all the nutrients they need and helps the blooms last longer.

Are peonies hardy?

Fortunately, peonies are hardy. They can therefore remain in the garden, even during cold nights. However, the above-ground parts die back in winter. In spring, the plants grow back.

Protection is usually not necessary, except for young plants. You can lay some mulch or leaves around the roots. This provides extra protection during severe frost.

Colours and symbolism of peonies

In addition to their beauty, peonies also have rich symbolism. In many cultures, they symbolise love, wealth and prosperity. This makes them popular not only in gardens but also as gifts.

The flowers are available in various colours, from bright white to deep pink and deep red. Each colour gives the garden its own atmosphere.

Combining peonies with other plants in the garden

Peonies are real eye-catchers, but they look even better with the right neighbours. Combine them with lavender, for example, for a beautiful contrast in colour and fragrance. Ornamental grasses also create a playful effect next to the full blooms.

Bulbs such as tulips or daffodils perfectly complement the blooming period of peonies. This way, you can enjoy colour early in spring, followed by the abundant blooms of the peony.

Tips for longer blooms and healthy plants

A vigorously growing peony produces many flowers for years. These steps will ensure abundant blooms and keep the plant healthy. You can find more tips on our page about caring for peonies.

1. Remove spent flowers: Remove faded flower buds immediately. Cut just above a healthy pair of leaves.
2. Fertilise lightly in spring: Use organic fertiliser in March or April. Use sparingly to prevent soft growth.
3. Water regularly: Keep the soil lightly moist during the growing season. Avoid puddles and wet roots.
4. Apply a layer of mulch: Lay a thin layer of compost around the plant in April. Mulch retains moisture and nourishes the soil.
5. Provide plenty of sun and air: Choose a spot with at least six hours of sun per day. Leave enough room for air circulation.
6. Support heavy stems: Place rings or stakes around large varieties in time. This keeps the flowers beautifully upright.
7. Keep the foliage clean and healthy: Remove diseased or brown leaves immediately. Clean your pruning shears after use.
8. Prune carefully in autumn: Cut away unsightly stems in September or October. Leave at least two strong stems.
9. Do not replant unnecessarily: Peonies should preferably remain in the same place for years. They do not like being moved often.
10. Divide older plants when necessary: Divide large clumps in autumn or early spring. Each section should have at least three shoots and strong roots.
11. Do not fertilise with too much nitrogen: Avoid high doses of fast-acting fertiliser. Too much nitrogen produces foliage but fewer flowers.
12. Protect during extreme drought or heat: Water sufficiently during warm periods. Temporarily shade with fleece if necessary.

With this routine, your peony will grow strong. This will help the plant bloom more abundantly and for longer each year.

Peonies as cut flowers

Peonies are extremely popular in bouquets. Cut the stems when the buds are still half closed. This will help them last longer in the vase.

Always use a clean vase and fresh water. Cut the stems at an angle for better water uptake. This way, you can also enjoy the full beauty of the peony indoors.

Propagating peonies by division

Do you want more peonies in your garden? Then you can divide older plants. Do this in early spring or autumn. First, cut away dead stems and divide the root ball. Each section must have at least three shoots and enough roots.

After dividing, you can replant the sections in a suitable location. Tree peonies cannot be propagated this way because they have woody stems.

Frequently asked questions about peonies

How long can a peony remain in the same place?
Peonies can grow in the same place for decades. Replanting is usually not necessary.

Why is my peony not blooming?
This may be due to planting too deeply, insufficient sunlight, or young plants. Sometimes it takes a few years before blooming begins.

Can you plant peonies in the shade?
They will grow in the shade, but will produce fewer flowers. Sunlight is essential for abundant blooms.

Choose colour, choose quality: peonies from Bulbs4you

The best time to plant peonies depends on your preference. Both autumn and spring are possible. Autumn often offers the best chance of strong root growth. However, spring is also a good time to start, provided you water sufficiently.

With the right location, the correct planting depth, and regular care, you can enjoy abundant blooms for years. Peonies are strong, hardy plants that add colour to any garden.

Do you want to start planting peonies yourself? At Bulbs4you, you will find a wide range of high-quality peonies and other flower bulbs. Order easily online and make your garden shine this season.