Bru this is really appreciated and it is amazing to see how many people are helping out. Quite incredible really. I have worked in parks for years (Cape Verde, Mali, Mozambique and Yemen) and these little details can have huge consequences..even if initially well intentioned. The tree seems to have other purposes as produces a natural insecticide. Plus it grows well in places like here. I did quite a bit of research on the subject for Neem, but I couldn't see any issues. I will keep a watch though. The steem forest will be all native plants though.