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My cauliflowers were nearly decimated by them. I successfully netted them against the pigeons but was tearing my hair out with the cabbage white. Think I will just not grow brassicas next year.
I'm going to try planting tons of nastursiums in the hope that they'll freely decimate them and leave my brassicas alone. Otherwise I may have to give up on them also. Nothing worse than having pests munch your carefully nurtured plants. I've already lost a few cabbages to slugs
My problem is two fold, White butterfly and Pigeons. This year I covered all my cabbage etc with securely fixed nylon fleece over a made up frame. The fleece was a bit expensive but it has been worth every penny. The frame was made from scraps of wood and rustynails. The pigeons just gave up in the end and I had a certain amount of pleasure in watching the white butterflies get all frustrated then fly off to somewhere else. Both fleece and frame will be good for at least a couple of years yet. Who is very pleased with themselves?
Do you know anyone with chickens? The chucks won't mind if there are still caterpillars on either. My chickens are actually getting sick of my neighbours cabbages so I'm letting the 'pillars eat the ones I grew for them.
I pick the brassica leaves once a week. I throw the Caterpillars in the pond, but it troubles me seeing them slowly drown. If I throw them 10 feet into a neighbouring field will they take to eating grass or will they work their way back to the brassica?
I originally planted my cabbages and cauliflowers under the black tunnel nets. Nothing, and I mean nothing was getting through them!
When end they were big enough, I put up a gazebo frame at one third height and covered it with green netting. Nothing has got to them through that either. I get lots of comments from other allotmenters at how well my brassicas are doing and what a good idea the frame set up is
shame I can't say the same for my sprouts my own fault, I never netted them at home and they got got at by the little buggers *mad face*
This is after they'd grow out of the black tunnel net.
I had another one over my sweetcorn, beets, lettuces and beans until they were bird proof. They're tailor made for my beds so they're interchangeable