>>2572776Once you notice that your plum suddenly withers (what?!), so you take a close look why all leafs are hanging down limply, and you notice that they simply got sucked out by a legion of aphids installed and guarded by a colony of ants, then there is no sane solution other than spraying the tree with a systemic pesticide.
Once you notice that your pine lost half of its needles overnight and the reminder of your tree moves, so you take a close look and you notice pine sawfly larvae, then there is no sane solution other than spraying the tree with a pesticide (unless you've got a couple of hours to remove them by hand).
And please explain to me how to grow a peach without spraying it with fungicides every year...