Q.You mentioned using a cardboard shield to protect apple trees from codling moths.
I tried that, this year, doing the best I could to make a circular “skirt” and taping it to the tree with duct tape at the top–but the trunk developed a weird growth (looked like a bunch of worms) the size of a small grapefruit at two points under the cardboard. I thought one of those “dish” collars they use to keep dogs from licking or scratching their surgical wounds might be better–but I didn’t have one large enough, and didn’t know where to get one. Is there any existing product available that would do the trick without harming the tree? My harvest was much better this year (still some damage, but nowhere nearly as much). I do pick up the fallen fruit and use or dispose of it as soon as I see it, but since the squirrels like to get up in the tree and chomp on it, too, I don’t always see it when it falls.
Certified GKH Gardening Expert
We don't make recommendations for retail products, but my research indicates there are traps made for this purpose, as well as organic sprays that may help. You may want to contact your local extension service agent and have a talk about this tree. Your service is located in Glen Burnie, MD. You may also want to talk to your local garden center experts about the multiple problems you're having.