Leeks

I have had leaf miner problems here too in the past, 1st year on the allotment I lost all shallots, onions and garlic so I net all alliums with insect mesh. I read that the fly is active laying between end of Feb to end of April and then again between end of Sept to end of Nov. I leave my nets on so haven't tested that theory yet.

I net feb to June then August to November and understand that the later brood are much more damaging - certainly my leeks seem to cop it worse then the garlic!