Freeman Maples retain the rapid growth of their Silver Maple parent and combine it with the improved structure and fall color of Red Maple. Physiological leaf scorch is the most common. Every time Mark Vitosh sees another 'Autumn Blaze' maple planted in the landscape, he gets slightly uneasy. Maple Tree Leaf Diseases. Pink and black lesions are a sign of nectria cinnabarina. Sienna Glen Maple . Spider mites multiply quickly and can also create webs that can cover infested parts of the trees.For prevention, the weeds need to be kept under control and infested plants destroyed. All three of my established Autumn Blaze maples are exhibiting black edges/spots on the leaves, the leaves are wilting, and all three trees have gone to seed. Anthracnose is a fungal disease found in many shade trees, including maples. As a result, the plants wilt because the water conducting mechanism of the plants are damaged by the fungi. Imagine eye-catching, reliable red fall color that's second to none - with our Autumn Blaze® Red Maple, you'll get amazing hues and more. © Copyright 2020 Hearst Communications, Inc. Up until 2 weeks ago it had nice 3" length leaves. Tailored for today’s streetscapes and landscapes, it is a heat resistant, vigorous growing, colorful choice for sustainable landscapes. Smaller and new leaves are the most affected and as a result, they appear yellow with green veins. You also have the option to opt-out of these cookies. The Autumn Blaze Maple tree is a great tree for your yard. The solution is to give your tree well-drained, friable soil and to avoid overwatering or using phosphorus or nitrate fertilizers. Autumn Blaze Maple Tree Care. See: Verticillium Wilt in the Pacific Northwest. By contrast, Autumn Blaze maple trees are consistent about reaching their mature height of about 50 feet, with little variation. These trees are really starting to impress me. This tree works well when planted as a shade tree. Growing in U.S. Department of Agriculture plant hardiness zones 2 through 10, depending on the species, the thin-barked, shallow-rooted trees are often attacked through wounds caused by … To identify diseases in maple trees, examine the bark for cankers and lesions, check for signs of girdling roots and analyze the tree to see if verticillium wilt is present. Use some fungicide, only after reading the instructions on its label. I cannot see any bugs on or under the leaves. Printer Friendly Version. Autumn Blaze Maple trees have black leaves, are wilting, and gone to seed. Brown spots on "Autumn Blaze" maple leaves usually indicate a disease, such as tar spot, leaf spot or anthracnose. Diseased Leaves. Would you like to write for us? It’s fine to wait for leaves to fall naturally. By late summer, the spots have become thick, shiny lesions up to 1/2 inch in diameter.