Download brochure
Free brochure
How to water peonies the right way
- 23 September 2025
Peonies are garden favorites thanks to their large, fragrant blooms and long lifespan. Once established, they are relatively low-maintenance, but one thing that makes the difference between weak plants and flourishing flowers is watering. Watering peonies correctly keeps their roots strong, their leaves fresh, and their blooms spectacular. In this blog, you’ll learn exactly how, when, and how much to water your peonies. Read on to learn more!
Why proper watering matters
Although peonies are hardy and resilient, water plays a crucial role in their long-term health. Their fleshy roots act as storage systems that provide energy for the next flowering season. Without enough water, these roots cannot build reserves, leading to fewer and weaker blooms. Excess water, however, can suffocate the roots and cause fungal diseases such as root rot. The key lies in maintaining consistent soil moisture: moist but never waterlogged.
When and how often to water peonies
The water needs of peonies depend on their growth stage and the season. Newly planted peonies require more frequent attention, while established plants can withstand dry periods better. Still, even mature plants benefit from well-timed watering during their active growth and blooming phases.
- Newly planted peonies: In the first year, water them 2-3 times per week during dry spells. This helps the roots establish firmly in the soil.
- Established peonies: Mature plants usually need only one deep watering per week when rainfall is scarce.
- During blooming season: From bud development to flowering, additional water supports strong stems and large, vibrant flowers.
Always water deeply so that the moisture penetrates 20-30 cm into the soil. Shallow watering encourages weak, surface-level roots.
Best watering techniques
How you water peonies is just as important as how often you do it. The right technique ensures the water reaches the roots, while also preventing diseases.
Best watering techniques
How you water peonies is just as important as how often you do it. Using the right technique ensures that the water reaches the roots and also prevents diseases.
| Technique | Why It Works |
|---|---|
| Morning watering | Watering early in the day allows foliage to dry before evening, reducing the risk of fungal infections. |
| Direct to the base | Apply water to the soil at the base of the plant instead of overhead, which keeps the leaves and flowers dry. |
| Mulching | Add a 5–7 cm layer of mulch around the plant. Mulch helps retain soil moisture, keeps the root zone cool, and reduces weed growth. Avoid piling mulch directly against the stems. |
| Soil check | Test the top 5 cm of soil regularly. If it feels dry, it is time to water. |
How to recognize watering problems
Peonies will often signal when something is wrong. By observing their leaves, stems, and soil conditions, you can identify whether they are receiving too much or too little water.
Peonies will often signal when something is wrong. By observing their leaves, stems, and soil conditions, you can identify whether they are receiving too much or too little water.
Signs of overwatering
- Yellowing leaves, especially at the bottom of the plant
- Weak or floppy stems that cannot support the flowers
- Mold or signs of rot around the crown of the plant
If you notice these issues, reduce watering frequency, improve soil drainage with compost or grit, and avoid adding water during periods of heavy rainfall.
Signs of underwatering
- Wilted, drooping leaves, particularly in hot weather
- Dry, cracked soil around the base of the plant
- Fewer, smaller, or underdeveloped blooms
If underwatering is the problem, increase the frequency of deep watering and consider improving soil structure with organic matter to hold moisture more effectively.
Seasonal tips for watering peonies
The water needs of peonies also change throughout the year. Adjusting your watering routine to the seasons ensures consistent health and strong growth.
- Spring: Provide sufficient water as new shoots emerge and buds form.
- Summer: After flowering, continue moderate watering while the plant builds energy reserves for the next season.
- Fall: Reduce watering slightly but do not allow the soil to dry out completely before winter.
- Winter: Established peonies usually need little or no additional water, unless winters are unusually dry and frost-free.
Groot & Groot: order peonies in bulk
Would you like to know more about watering peonies and how proper care helps them thrive? Or are you curious about the prices of our peonies or peony roots? Feel free to contact us. Groot & Groot supplies peony flowers and peony cuttings in wholesale quantities. We supply worldwide to professional growers and (export) wholesalers. At Groot & Groot, we are able to grow peonies all year round. So we are not seasonal. You can also email us directly at info@grootgroot.nl or call us at 0228-208050. We would be happy to help you!
