I've been trying to control all these pests with neem (+ bicarbonate + a solvent) and it seems to do absolutely NOTHING. Today a rose bush was literally covered with aphids and I had sprayed it a few days ago. I gave up and sprayed insecticide on it (after removing the aphids manually). I don't know, neem just doesn't seem to work for me. One day the plants have rust and the next day they also have black spot....
I've been trying to control all these pests with neem (+ bicarbonate + a solvent) and it seems to do absolutely NOTHING. Today a rose bush was literally covered with aphids and I had sprayed it a few days ago. I gave up and sprayed insecticide on it (after removing the aphids manually). I don't know, neem just doesn't seem to work for me. One day the plants have rust and the next day they also have black spot....