Viburnum: Leaf spot

categories: Ornamentals Shrubs Viburnum Viburnum Diseases

revision date: 2024-06-05 02:07

Viburnum leaf spot.
Viburnum leaf spot
Photo by: J.R. Glass


Various fungi cause leaf spot symptoms on viburnum. The spots are typically necrotic brown spots of varying sizes. At least one bacterial leaf spot is also common.

Management Options

Use Integrated Pest Management (IPM) for successful plant problem management.

Non-chemical Management

Select non-chemical management options as your first choice!

  • Plant in full sun.
  • Space plants and prune to provide good air circulation.
  • Remove and destroy infected leaves and shoots.
  • Rake and destroy fallen leaves.
  • Leaf spot diseases should be accurately diagnosed before further action is taken. Consult your county Extension agent or WSU Master Gardeners for assistance.

Chemical Management

IMPORTANT: Visit Home and Garden Fact Sheets for more information on using pesticides.

  • Fungicides may be applied to protect new growth or at first sign of disease.
  • Homeowners should not make foliar applications to trees over 10 ft tall.
  • Consult a commercial pesticide applicator for treatment of trees and shrubs over 10 ft. tall.

Approved Pesticides

Listed below are examples of pesticides that are legal in Washington. Always read and follow all label directions.