[L.A.]

I appear to have greenfly under my lettuce leaves, which is the best spray or way to kill them off (the greenfly not the lettuce lol) Cheers.

[richyrich7]

Soft soap works reasonably well, not sure if you can use derris dust, i don't much like using pesticides to be honest. You could try importing a few ladybirds or rub em off by hand. I once read many years ago that a few handfuls of young nettles soaked for a day or two in a bucket of water, the water when used is supposed to repel greenfly ?