scab
By George Bonnema, Luverne HorticulturalistAugust 13, 2019My trees are dying!!!! I’ve had a few people question the leaf loss of their trees, and most often the trees they are alarmed about are flowering crab trees. This year is exceptional for infection of a fungal disease called scab. The infection starts mid spring, and the first symptom is a black spot on the leaf which most people don’t notice. Later the leaf turns yellow and drops, and that is…
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