Flea beetle

AdRock

These damn things are destroying my pak Choi! Does anyone have any organic remedies or success with neam oil? 

fidgetbones

I wouldn't put neem oil on anything I plan on eating.

You could try the old trick of brushing over the plants with a piece of yellow card with glue on. The flea beetles jump up and stick to the card. Never tried it but hey, better than nothing.

Plashing

My main problem with pak choi is flipping slugs and snails.I have had trouble with flea beetle in the summer months as well as caterpillars,I tried growing them in the greenhouse without any success.

Skandi

Your best bet with flea beetles is insect netting you need to get the very fine meshed variety and it needs to be put on as soon as you sow/transplant, make sure to close it up tight. Once they are there, nothing much to do.