I've been using Milorganite for a few years now on my Hibiscus and on the Hydrangeas this year when I noticed them coming around. The deer photo I posted above eating my Hydrangea is about two days after I applied it. It doesn't seem to bother them which is why I moved them into my greenhouse. They've also about stripped my large Hibiscus and my two smaller ones. The large one is still outside the smaller ones I also moved into the greenhouse to recover. I'm not sure either when they go dormant around here. The large one was just starting to bloom when I bought it in March. I guess the worst that can happen is that they die and I have to just start over but as the saying goes 'nothing ventured, nothing gained'.
