Recommendations for individual tree treatment by a plant care specialist are based on the number and amount of symptoms observed on individual trees. A tree with fewer symptoms may be pruned to remove only that part of the crown affected. Sycamores in advanced stages of disease being removed. Note thin, yellow crowns. Avoid wounding exposed tree roots when mowing.
Infections can initiate at the ground level from rain-carried fungal spores.
Canopy of a diseased tree on left with discolored sparse foliage and a healthy canopy on right.