Once I wrote the matter of plant lice is settled, but it is wrong. They’ve never left my green house. Temporally the number decreased very much, but it came back, Now they are on lettuce, not on spinach and rocket.
I wiped them off by paint brush after harvest, but it is not possible to wipe them all, almost 50% is left on it. And We need wash 6 or 7 times before eat.
Organic insecticide or natural enemy are able to decrease the number, but not enough for harvest. All I have to know is how to keep them out.
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