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peony diseases

Peony diseases

  • Blog
  • 7 March 2025

Peonies are beloved for their stunning blooms and rich fragrance, but like all plants, they are vulnerable to diseases. It’s important to understand the common diseases that affect peonies, how to identify them, and which preventive measures can help ensure your plants stay healthy and vibrant. In this blog, we will tell you more about the most common peony diseases and offer tips on how to protect your peonies. Feel free to read on.

The most common peony diseases

Here are the most common diseases that can affect your peonies, along with their symptoms, prevention tips, and treatment options:

Disease Name Symptoms Prevention & Treatment
Botrytis Blight (Gray Mold) – Brown, mushy spots on flowers, buds, and stems
– Grayish mold growth
– Wilted or drooping flowers
– Ensure good air circulation
– Remove infected parts
– Water at the base, not the foliage
– Use fungicide for prevention
Powdery Mildew – White, powdery coating on leaves, stems, and buds
– Stunted growth
– Premature leaf drop
– Avoid overhead watering
– Prune infected areas
– Use fungicide
– Improve plant spacing
Root Rot – Yellowing or wilting leaves
– Weak growth or poor flowering
– Foul smell from the roots
– Ensure well-drained soil
– Water deeply but infrequently
– Remove infected plants
Peony Wilt – Brown or black streaks on stems
– Wilting or yellowing of leaves
– Sudden collapse of plant parts
– Remove infected stems
– Sterilize pruning tools
– Avoid splashing water on foliage
Leaf Spot Disease – Dark, round spots with a dark center and lighter edges
– Yellowing or browning around spots
– Premature leaf defoliation
– Remove infected leaves
– Avoid overwatering
– Use fungicide for fungal control

 

Final tips for peony disease prevention

To keep your peonies healthy and free from diseases, it’s essential to follow some key preventive measures. By making thoughtful decisions in your planting and care routine, you can significantly reduce the risk of disease and ensure that your plants thrive. Here are some final tips to help protect your peonies:

  • Choose disease-resistant varieties: some peony varieties are bred to be more resistant to diseases. Choose these varieties if you live in an area prone to fungal infections.
  • Plant in the right spot: make sure your peonies are planted in a sunny area with good air circulation and well-drained soil to help prevent disease.
  • Avoid over-fertilizing: too much fertilizer can make peonies more vulnerable to diseases. Follow the recommended amounts for fertilizing.

common peony diseases

Groot & Groot: order peonies in bulk

Would you like to know more about peony diseases and how to prevent them? 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. 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 +(31) (6) 110 60 243. We would be happy to help you!

Written by

Koen Groot

Sales & Purchases

Owner and specialized in Sales.
Experienced in building a worldwide network of suppliers and sales in both the peony flower and bare root industry.