True Fir: Current-season needle necrosis
categories: Conifers Ornamentals True Fir True Fir Diseases
last review date: 2026-01-29 12:49
Photo by: R.S. Byther
Biology
Current-season needle necrosis affects noble fir and grand fir. The cause is unknown but appears to be a cultural problem due to a mineral deficiency.
Shortly after growth begins, the current season’s needles develop brown bands. These bands later turn dark or reddish-brown and may expand to cover the whole needle. The reddish-brown needles drop from the tree.
Current-season needle necrosis is not specific to a particular area on the tree. It does not spread between trees.
Management Options
Use Integrated Pest Management (IPM) for successful plant problem management.
Non-chemical Management
Select non-chemical management options as your first choice!
- Provide proper culture for trees. Proper irrigation and fertilization can minimize cultural problems.
Chemical Management
IMPORTANT: Visit Home and Garden Fact Sheets for more information on using pesticides.
- None recommended
WSU Extension programs and employment are available to all without discrimination.
Evidence of noncompliance may be reported through your local Extension office.