I have a problem with aphids on my winter lettuce (growing under row cover). Last year I tried insecticidal soap but the plants died (from the aphids or soap, not sure) so I'm hesitant to try that again. I sprayed them off with water but 2 days later they were back. Sprayed again with water. Any other (non-chemical) suggestions? No predatory bugs around my garden this time of year.
they are tucked down in the baby center leaves so I think it would be hard for birds to get to. Thanks for the idea though, I'll try it when it warms up a little.