I finally have a yard and I've gone a bit nuts buying plants for it. I recently placed an order for six blackberry plants. Today I was checking out the space where I was planning to put them and noticed that there were all ready some black berries there, but they had dark brown spots on the leaves. I'm guessing I should find another spot for my new plants (unfortunately). I would like to know what the disease is, however. A picture is under the cut. Thanks for any help/advice.