city street in Pennsylvania is
lined on both sides with Horse Chestnut trees. These trees were
beautiful in the spring, but through the summer months many of the leaves turned yellow
and brown, and dropped off long before they would usually drop in the fall
of the year. What do you
think is wrong
with our Horse Chestnut trees and can we save them?
chestnut (Aesculus hippocastanum) trees are susceptible to a
fungal disease called leaf blotch.
This fungal disease causes reddish-brown spots on the leaves
that are often surrounded by yellow halos. Infected leaves turn
brown and fall prematurely.
Leaf blotch is more severe when we have wet
spring weather, but it can be equally severe during hot, dry
Highly valued trees can be sprayed preventatively
with cozeb (Dithane, Protect Turf and Ornamental Fungicide)
fungicide, but treatment is not usually warranted. Although it
is unsightly and messy, leaf blotch is not life threatening.
Maple Leaf Drop
Black Walnut Trees & Juglone