Last year, I had an infestation of flea beetle on cabbages, broccoli, radishes, rocket etc. I've read about using a lightweight fleece. But, how does that work? I've read that the beetles are in the soil from probably compost laid down on the bed, and so to my mind, putting a fleece on top of the young transplanted seedlings is only going to trap the flea beetles in there!
I also had onion leaf miner and found all my leeks and one complete bed of white onions, from sets, were infested, whereas the yellow and red onions are fine, so far.
Can anyone tell me if the fleece works, and if so, how to use it effectively - I don't want to lose any more veg - first time I've ever had problems.
TIA