Crabapple and Dogwood Defoliation: Wet Springs and Cultural Management

Recurring Leaf Spot and Drop Over Two Years

Same trees as above. Owner asks about fertilizer to strengthen trees and home remedies (vinegar, soap) for spraying.

Expert Analysis

If springs were unusually wet, heavy leaf spotting causes premature drop. Not usually fatal if watered/fertilized. Raking leaves reduces next year's inoculum. Spraying tall trees is expensive and requires full coverage, multiple apps. No scientific support for vinegar/soap; improper mixes injure leaves. Soil test first for fertilizer needs. Contact local Extension (Cook County, IL numbers provided).