The wife got a walking stick tree and when the leaves came about this spring, they slowly curled up. When we opened them up, we found silk holding them together and little green worms with brown heads inside. We have watched the wasps try to get them and they can't. We have sprayed with water (higher pressure stream) to remove them and when new leaves sprout, again, the cycle starts all over again. From what I can figure out, these worms are moth related. We do have the tree in a shady spot and a neighbour (also facing north) has theirs (two trees) in the sun and have no apparent worm problem. Would it be safe to say that moving the tree into the sun would essentially eliminate the worms and future worm infestations? The tree is bare at this point and I fear damage to the tree. Any help is greatly appreciated. Cheers!