Oh wow! I have what was labeled hoya in my bathroom which I have yet to even water yet..... it is a jade though (what I think anyways) It has grown a lot since I got it about 2 months ago. I will have to go and get some to try. Can this be used on all plants? Can you use it on the leaves like for palms? I constantly mist my palms and they have done really well. Do you spray right on the leaves then or just on the dirt?