In the garden I have few problems with aphids, they are controlled by many different predators.
However when I bring plants under glass in the the fall the aphid population increase dramatically but there is no sign of the predators. Especially soft bodied young plants and seedlings are affected. I am afraid of using insecticides too much as some can damage the plants. I mostly use my fingers to squeeze the culprits but this is a tedious and tiresome task.
What do you do to keep aphids under control?