Seasonal Pests of Boxwood and How to Protect Your Hedge

Boxwood hedges are a classic feature in many gardens, valued for their lush green appearance and formal shape. However, they are susceptible to various pests throughout the year. Understanding these pests and how to protect your hedge is essential for maintaining its health and beauty.

Common Seasonal Pests of Boxwood

Spring Pests

  • Boxwood Psyllid: Causes leaf curling and distortion. Adults lay eggs in early spring.
  • Boxwood Leafminer: Larvae tunnel inside leaves, creating blisters and discoloration.

Summer Pests

  • Scale Insects: Appear as small bumps on stems and leaves, sucking sap and weakening the plant.
  • Aphids: Cluster on new growth, causing deformation and excreting honeydew which promotes sooty mold.

Fall Pests

  • Boxwood Moth: Larvae feed on leaves, leading to defoliation if infestations are severe.
  • Spider Mites: Tiny pests that cause stippling and webbing, especially in hot, dry conditions.

Protecting Your Boxwood Throughout the Year

Preventative Measures

  • Maintain proper watering and fertilization to keep plants healthy.
  • Prune regularly to improve air circulation and remove infested or dead branches.
  • Inspect plants frequently for early signs of pests.

Control Methods

  • Natural Predators: Introduce beneficial insects like ladybugs and parasitic wasps.
  • Horticultural Oils: Apply during dormant periods to smother overwintering pests.
  • Insecticidal Soaps: Use on affected areas, especially for soft-bodied pests like aphids.
  • Chemical Insecticides: Use as a last resort, following label instructions carefully.

Additional Tips for Healthy Boxwood Hedges

Proper care and early intervention are key to preventing pest damage. Keep your hedge healthy with appropriate watering, fertilization, and pruning. Regular inspections help catch infestations before they become severe. When pests are detected, act promptly with suitable control methods to protect your investment and enjoy a vibrant, thriving hedge all year round.