Organic control of cabbage pieris

[Gwennhael]

Any tips on getting rid of pieris caterpillars on sprouting broccoli and pak choi other than my thumb and forefinger?

[Gwennhael]

[squeezyjohn]

I don't know of one short of manual picking and squishing or the preventative measure of covering the whole bed in mesh before the butterflies come scouting around.

[Pescador]

Try spraying with Bacillus thuringiensis

[GrannieAnnie]

I'm trying self-rising flour sprinkled on leaves. The only problem so far is rain washing it off. I'll report back if this really works on cabbage.