UC IPM Home > Homes, Gardens, Landscapes, and Turf > Trees and Shrubs > Diseases

How to Manage Pests

Pests in Gardens and Landscapes

Needle cast fungi—Various fungi including Elytroderma, Lophodermella, Lophodermium, Phaeocryptopus, Rhabdocline, and Rhizosphaera spp.

Needle cast fungi can cause chlorosis, black to brown lesions, or spots or streaks to appear on needles and stems. Cankers and brown streaks may occur on wood. Branches may die back. Moist conditions favor the growth of needle cast fungi.

Solutions

Remove nearby plants and weeds, thin the plant canopy, and prune off lower limbs to reduce humidity.

Browning of needles of black lesions
Browning of needles and black lesions

Close up of Elytroderma deformans
Close up of Elytroderma deformans

Statewide IPM Program, Agriculture and Natural Resources, University of California
All contents copyright © 2017 The Regents of the University of California. All rights reserved.

For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See our Home page, or in the U.S., contact your local Cooperative Extension office for assistance.

Acknowledgements Staff-only pages Subscribe (RSS) Contact UC IPM

Agriculture and Natural Resources, University of California

© Friday, 01-Dec-2017 16:06:39 PST Regents of the University of California Division of Agriculture and Natural Resources Nondiscrimination Statement

Accessibility   Contact webmaster.