Well, I kind of feel stupid now. I noticed some very small centipede type creatures in the container of my Moonrise Japanese Maple. I didn't think much of it, but later when I was planting the tree, I saw about 8-10 more of them. I had already cut apart the container, so I figured that I'd just go ahead and plant the tree and then figure out what the things were. Apparently they are called garden symphylans and they sound like a real pain. I kept reading stuff about how they especially like to eat new roots and such. I also read that it is much easier to control their numbers if you submerge your plant in water and wait for them to come to the surface. Too bad I just finished planting the tree... Oops. I also have read that dealing with them once you have plants already growing is difficult and maybe impossible. To make matters worse, I was reading that they do well in rich organic soil and will increase in number if it contains manure. Well as it happens, part of the compost I used to amend the soil fits that description perfectly. As icing on the cake I read that they garden symphylans love soil where there are a lot of earthworms because they need the worm holes to get around. Have I mentioned that my garden has an abundance of earthworms? I'm starting to feel some anxiety about how this is all going to turn out. If anyone has ideas about how to deal with these little villains please let me know. I am considering buying a systemic insect control product, but I will only use that if I am sure that these guys are a big problem. I'd prefer not to use the systemic insect control because it's toxic. I am very new to gardening, in fact this is my first year gardening. I've been trying to read whatever I can, but nothing substitutes for advice from veterans. So if you have any thoughts or experience I'd love to hear whatever it is you have to say about my situation.