tree fungus


Sycamore Tree Fungus Powdery Mildew
Sycamore Tree Diseases¬† Anthracnose   Symptoms Dead twigs and branches have sunken cankers. Bud death followed by new bud formation and more bud death results in witches’ broom-like proliferation of branch ends as well as very crooked branching patterns. Black fungal fruiting structures are visible on the bark covering newly […]

Sycamore Tree Diseases – Symptoms & Control


Poplar Tree Disease Shoot Blight
Poplar Tree Diseases   Cryptodiaporthe Canker   Symptoms At first, a few twigs are killed. The fungus spreads rapidly to cause many variously shaped cankers and kill large branches as it does so. Perennial Canker formation leads to leaf yellowing, premature defoliation, and water sprout formation. Green-Brown material filled with […]

Poplar Tree Diseases


Maple Tree Diseases   Anthracnose   Symptoms Norway maple: narrrow, purple to brown streaks occur along the leaf veins. Sugar maple: large, irregular, brown or red-brown areas develop along and between the veins similar to injury due to drought and heat stress. Small, brown fruiting structures of the fungus are […]

Maple Tree Diseases



Cedar Apple Rust and closely related diseases, cedar-quince, cedar-hawthorn, and Japanese apple rusts are caused by fungi belonging to the genus Gymnosporangium. These fungi require two different living host plants in order to complete their life cycles. If either host plant is not present, the fungus dies. Juniper, sometimes called […]

Cedar Apple Rust & Related Rusts on Ornamental Trees


Cherry Tree Disease – Black Knot Black Knot causes the formation of dark brown to black, long, swollen galls or knots on the branches of most types of cultivated plums, prunes and cherries. The disease is very destructive, killing twigs and limbs, and occasionally whole trees. Although there are no […]

Black Knot – Cherry Tree Disease