|I believe I have a spen tree in my yard and this year all the leaves have turned brown like somthing is attacking it. I need info on what to use to protect it.|
|I wish I could diagnose the problem but without being able to inspect the tree, I'm at a loss. Here's a website with photos of the most common diseases of aspen/poplar trees. If you don't recognize the symptoms, try taking a branch of the tree to your local Master Gardener Clinic or OSU Cooperative Extension office for positive diagnosis. Here's the website: http://www.ext.colostate.edu/p...
Good luck with your tree!