What is this maple tree's problem/disease/blight?
This is a Silver Maple otherwise healthy. I just noticed all the dead shriveled leaves in it and there are spots on most of the gazillion annoying helicopter seeds. (normally these are light green) About 2/3rds of the tree is affected. As you can see, I do have plenty of good leaves I think. I have not yet fertilized it and I'd really like to do something organic. My dad thinks I should use something synthetic, but he also uses his rabbit pee- pure nitrogen. He collects about a bucket a day from all his bunnies somehow, but he's not sure that would be enough. I'd take a recommendation for fertilizer if you have one and maybe someone knows what this is.