Yikes, another problem. This is my first garden and disease and pest control has been my biggest challenge. My rasberry bush has pin- sized holes in it on the lower leaves. I think those are borers, but I'm not sure how to treat it. My rasberry bush doesn't have fruit yet. It's only a year old, so maybe next year, but I need to know how to keep it healthy. I know they like acid, so I'm going to give it some acidic fertilizer. Also, do I need to prune it back at all before next year? In the mean time, I need to know how to treat these borers.