Narcissus (Daffodil): Leaf scorch
categories: Bulbs Narcissus (Daffodil) Narcissus (Daffodil) Diseases Ornamentals
revision date: 2023-02-08 12:00
Photo by: R.S. Byther
Biology
Leaf scorch is caused by a fungus that survives in the necks of the bulbs (thus infecting emerging leaves) and also in infected foliage. Leaf tips develop yellow-brown to reddish elongate spots or blotches soon after they emerge from the bulb. The spots become raised and scabby, with tiny brown fruiting bodies of the fungus in the scabby area. This disease can also cause bud distortion and brown spotting of flowers.
Management Options
Use Integrated Pest Management (IPM) for successful plant problem management.
Non-chemical Management
Select non-chemical management options as your first choice!
- Rotate plantings.
- Prune out and destroy infected foliage when first noticed (when practical).
- Remove and destroy severely infected bulbs.
- Do not plant in poorly drained areas which favor disease development.
Chemical Management
IMPORTANT: Visit Home and Garden Fact Sheets for more information on using pesticides.
Apply fungicides to protect new growth.
Approved Pesticides
Listed below are examples of pesticides that are legal in Washington. Always read and follow all label directions.