The best treatment is prevention through proper maintenance. In severe cases, remove the tree, fumigate the soil, and plant a wilt-resistant species in its place. Treatment: No cure, but some trees recover with proper care.Causes: Soil-based fungus verticillium dahliae or verticillium albo-atrum.Verticillium wilt causes discoloration in the sapwood under the tree’s bark. ![]() Symptoms: Wilted, yellowing leaves on one side of the tree stunted leaf growth and defoliation.Dead leaves will fall to the ground and the soil reabsorbs the fungal disease, potentially setting off a wider verticillium wilt infestation. When this happens, water and nutrients are unable to reach branches and leaves. Verticillium wilt is a fungal infection of the soil that penetrates tree roots and attacks a maple tree’s vascular (or circulatory) system. Verticillium Wilt Photo Credit: Andrey Maximenko / Canva Pro / License Causes: The most common cause is the Phytophthora fungus other fungal causes are Fomes, Ganoderma, and Laetiporus.Symptoms: Affecting the maple tree’s bark, this disease forms “fruiting structures” along the trunk and roots in cases of Phytophthora, “bleeding” cankers appear on wood.This leads to a compromised vascular system the maple is not able to receive the water and nutrients it needs to survive. Most common in wet, poorly drained soil areas, root rot attacks the healthy tissues of the affected tree. Root Rot Photo Credit: University of Wisconsin-Madison Plant Disease Diagnostics Clinic Remove infected trees to keep the disease contained.Ģ. Season: Mostly late spring, early summer.Some trees recover others must be completely removed. ![]() Treatment: None other than prevention by protecting roots from damage.Causes: The fungus ceratocystis virescens.Symptoms: Smaller than normal leaves at the crown, discolored wood, and bald spots.Once inside, the sapstreak pathogen prevents water and nutrients from reaching branches and leaves. Sapstreak threatens sugar maples specifically, entering through damaged roots. This maple tree disease (see picture above) can affect the bark and gets its name from the dark staining that forms in a star-shaped pattern on the rings of a tree’s chopped trunk. Sapstreak Photo Credit: Manfred Mielke / Wikimedia Commons / CC BY 3.0 Here are some of the most common maple diseases from most to least serious: 1. And while most maple tree diseases are purely cosmetic, a few threaten the life of the tree. ![]() The best way to keep healthy trees is the prevention of disease through proper maintenance watering, fertilizing, and pruning. Maples are excellent shade trees, but unfortunately, like oaks, sycamores, and all other trees, they suffer from diseases. Their scientific name is Acer of the family Sapindaceae. There are as many maple tree species as Bubba Gump has ways of making shrimp: silver maples, red maples, Japanese maples, Norway maples, etc.
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