I've got an autumn blaze maple, it's been in the front yard, southern exposure, for about 2 years. Now the leaves are all red and drying out, but it's only August. Can anyone tell me what might be going on with this tress? We've not had much rain, but none of the other trees are having problems. We did plant it very near the spot where we took out a cedar, could the old cedar roots be creating this problem?