Fertilize peonies now!

Spring is the best time to give peonies food for the growing season ahead

Fertilize peonies in Spring, just as new shoots begin to emerge from the ground—typically when they're about 2–3 inches tall. Use a balanced, slow-release fertilizer (like 10-10-10), applying it around the base of the plant, not directly on the crown.

Avoid over-fertilizing, as this can lead to lush foliage but fewer blooms. A light application of compost or aged manure in fall can also support long-term soil health.

Here’s a Peony Care Calendar to help you keep your plants healthy and blooming beautifully year-round:


Early Spring (March–early May)

• Remove mulch and debris from around peony crowns as soil warms.
  
  
• Fertilize with a balanced fertilizer (10-10-10) when shoots are 2–3" tall.
  
• Support: Install plant supports or cages early before growth gets tall.
  
  

Late Spring (late May–June)

• Bloom time! Water during dry spells, aiming for 1" of water per week.
  
• Deadhead spent blooms to keep plants tidy and prevent seed formation.
  
• Watch for ants or botrytis; ants are harmless, but gray mold needs removal of affected areas.
  
  

Summer (June–August)

• Continue watering in dry weather.
  
• Avoid fertilizing—too much fertilizer can reduce blooming next year.
  
  
• Maintain clean beds to reduce diseases.
  

Fall (September–October)

• Cut back foliage to ground level after the first frost; dispose of leaves to prevent disease.
  
• Optionally, apply compost or aged manure around the root zone.
  
• Divide and replant peonies if necessary—this is the only good time to do it.
  

Winter (November–February)

• Peonies are dormant.
  
• In our cold area, a light mulch layer can protect crowns but remove it early in spring.