I'll keep it short. I have a Stella cherry tree. My neighbour bought a cherry tree and has decided to leave it. Their cherry tree is absolutely covered in blackfly. The last couple years my tree always gets infested. Last year I bought native ladybug larva, they ate almost everything up, breed and ate the rest then left. I've gone out again this year and I'm starting to get the infestation again. Their tree is covered once again, nothing new there. I've checked the tree over and there were predators on the tree. Spiders, some caterpillars and a few ladybugs. I assume the ladybugs are either coincidental or their off spring returned. I'm going to be buying a grease band for the base to stop the ants and some other bits and bobs. I personally don't like spraying pesticides or poisons onto anything I grow. I have read that apparently Parsley is good for attracting ladybugs and since it's relatively easy to grow it would be a good attraction for predators, though I knew this will be for next year. My question is, does Parsley actually attract predators? I want something that may be passive in helping me combat this issue I have every year. A side from that what do you think I can do to solve this issue?