Abstract

FEUCHT, J.R. 1987. Misleading mimics: some injuries are not due to herbicides. Am. Nurseryman 165(6): 148-150.

Frequently, herbicides are incorrectly blamed for damage to landscape plants. Perhaps the most easily confused injuries are those that cause foliage distortion. The herbicide 2,4-D is well-known for this symptom. However, eriophyid mites, tiny four-legged creatures, can cause similar symptoms. Leafhoppers and plant bugs on honeylocust can also distort leaflets and even twist petioles. Frost injury, overwintering and some mildew fungi can also produce leaf cupping. Sorting out the real cause of a symptom requires careful investigation—even the careful scrutiny of a detective.

• © 1988, International Society of Arboriculture. All rights reserved.