Maple tree leaves. Need help!!
My maple tree has many leaves that are curling and dropping. I think it is a silver maple. The curled leaves almost look burnt around some edges. Some branches are very sparse this year. The tree has produced many seeds (helicopters) this year. I have been looking closely at the tree and leaves and have seen a few what appear to be aphids (tiny whitish bugs) and I saw one tiny orange bug. Last fall I thought we may have had tar spots on the leaves. So we bagged them all up in the fall to try and stop the spread. Please help!!! I want to stop the damage. I live in St. Francis MN. Please email me with any questions.
Symptoms of anthracnose on maple leaves include brown lesions that spread along the larger veins, circular brown spots with tan centers, and irregular blotches that kill large sections of a leaf. In general, fungicides are not recommended for control of shade tree anthracnose. We often find a few insects on shade trees. Natural predators are usually able to control the aphid population. A strong stream of water from a hose may remove enough aphids to keep their numbers below damaging levels. The following sites have more information.