Quote:
Originally Posted by calgarygeologist
I have a problem with one of my trees. Along my fence I have a cherry tree, plum tree and two Caraganas. Last year my cherry and plum trees were infested with aphids and I had to spray the trees. This year the cherry tree is fine but the plum tree is infested again with aphids. The tree is a haven for lady bugs and caterpillars. I'm planning on spraying the tree tonight. Does anyone know why this tree is attracting aphids?
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If the tree is attracting lady birds (aphid eaters) then I would just try spraying the base with some kind of ant poison or insecticide. They're aphids' bodyguards and if there are lots of predators (ladybugs and caterpillars) then they're usually pretty weak without the ants there as defense. (Ants defend aphids as the aphids make delicious honeydew poop the ants love). If you've got plenty of lady birds/bugs then spraying the whole tree with any sort of insecticide will kill everyone.