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Horticulture and Home Pest News
Horticulture & Home Pest News is filled with articles on current horticulture, plant care, pest management, and common household pests written by Iowa State University Extension specialists in the Departments of Entomology, Horticulture and Plant Pathology.

Expect Some Deformed Leaves This Year

This article was published originally on 5/2/2003

The ISU Plant Disease Clinic routinely receives samples of leaves that show damage caused by something other than an infectious agent. A damaging freeze happened the night of April 8th. Cells of developing buds may have been injured. If cells were killed, leaves and flowers might grow out in a deformed manner. The edges will look tattered, or there may be holes of various sizes in leaves, usually between veins. These damaged areas usually have a green edge. Damage caused by insect feeding or fungal infection typically causes the leaf margin or edge to turn a darker color. Not all leaves on a tree will have this appearance. When an injurious cold event happens, only cells in a sensitive state will be affected. Leaves that form later should be normal. One or a few species may be affected because the timing of developmental stages varies between plant species.



This article originally appeared in the 5/2/2003 issue.

Year of Publication: 
2003
Issue: 
IC-489(9) -- May 2, 2003