"John Hall" wrote in message ...
We have kale and broccoli under net cages and still have significant
problems with cabbage white and flea beetle. On net has a finer mesh and
seems to protect the plants much better. We are not using chemicals.

I am unable to find anyone who sells a fine meshed net.

'Enviromesh' too fine for you? Try LBS - can't remember the URL atm.
I think you could manage without. We grow our young brassicas in plug trays - this gets the plants big enough to
avoid fleabeetle damage. We handpick caterpillars on quite a large scale - like 300 sq metres and it's not a huge
job once you get your eye in and catch 'em young.

Rod