Don’t worry, though, the fungus only attacks the leaves, leaving the rest of your maple tree alone. By the end of September, those black spots are at full size and may even appear to be rippled or deeply grooved like fingerprints. The tar spots don’t emerge right away, but are typically obvious by mid to late summer. ![]() The spreading yellow spot also changes colors as it grows, slowly turning from a yellow-green to a deep, tarry black. As the season progresses that spot spreads, eventually growing up to 3/4 inches (2 cm.) wide. When the fungus initially infects a leaf, it causes a small 1/8 inch (1/3 cm.) wide, yellow spot. This is because a fungal pathogen in the genus Rhytisma has taken hold. It starts with small yellow spots on growing leaves, and by late summer these yellow spots expand into large black blotches that look like tar has been dropped on the leaves. Maple tar spot is a very visible problem for maple trees. Never fear, maple tree tar spot is a very minor disease of maple trees and you’ll have plenty of fiery falls to come. When you discover that your tree is suffering from tar spot of maples, you may start to fear that it spells the end to beautiful fall scenery forever. Your maple trees are absolutely gorgeous yellow, orange, and red fireballs every fall– and you look forward to it with a great deal of anticipation.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |