Just keep them netted, right down to the ground, it's a flaming nuisance
but
seems the only way unless someone comes up with a good answer

Seconded! Mine are still covered, I just loosen the netting periodically to
allow for growth. Taking the netting off is just like saying "Come on in
boys - brassicas for breakfast!"

I've also found that a close knit net also helps to minimise cabbage white
butterflies laying their eggs and the associated green munchers.

On the down side though, it deters blackbirds and other useful birds from
eating slugs. Can never win!

--
Drakanthus.


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