Yellow chokecherry leaves

Asked August 3, 2016, 10:08 PM EDT

Some of our chokecherry trees have brown spotted yellow leaves that appear to be dying. Remaining trees in same area appear healthy. Just dry or we need to treat?

Carver County Minnesota

1 Response

Cherry leaf spot is caused by the fungus Blumeriella jaapii. Symptoms of infected leaves are red or purple spots that turn brown and then fall from the leaf, leaving holes behind. Leaves infected with many spores can turn yellow and drop from the tree entirely. Clearing fallen leaves and removing dying branches help control this infection -- healthy leaves can be infected by diseased leaves on the ground, particularly as rainwater splashes the diseased leaves and spreads the spores. Typically, removing the infected leaves controls cherry leaf spot.