Published on: May 14, 2020
![Black leaf spots caused by Chinese elm anthracnose.<br>(Credit: Jack Kelly Clark)](https://ucanr.edu/blogs/UCIPMurbanpests/blogfiles/69981small.jpg)
Black leaf spots caused by Chinese elm anthracnose.
(Credit: Jack Kelly Clark)
(Credit: Jack Kelly Clark)
Anthracnose is a group of fungal diseases that infect many trees and shrubs, causing dark lesions on leaves and cankers on twigs and stems. In some areas of California, vegetables and turfgrass can also be infected with anthracnose.
Symptoms of anthracnose vary by plant host and weather conditions. High humidity and dense canopies can exacerbate this common disease. Management relies on planting resistant cultivars of landscape plants along with careful maintenance of susceptible cultivars, such as pruning and removal of fallen leaves and twigs.
Authors Jim Downer (UCCE Ventura County), Steven Swain (UCCE Marin County), and Amanda Crump (UC Davis Plant Sciences) recently revised
Public Value:
UCANR: Protecting California's natural resources
Tags: anthracnose (2), Crump (1), Downer (4), fungi (10), landscape (62), pest management (136), Pest Notes (118), resistant cultivar (1), Swain (5), trees (18), UC IPM (373)
Focus Area Tags: Pest Management, Yard & Garden
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