protecting brassicas

[raygrape]

I have a small veggie plot at the side of a house which is next to a field.I have tried unsuccessfully to grow brassicas. I grow from seed in a greenhouse then harden off and then plant out healthy plants.Year 1 they were attacked by cabbage rootfly. Year 2 I put discs round base and they were attacked by caterpillars literally at least a hundred overnight on each plant. Year 3 I put netting over and sprayed with systemic incecticide. They were attacked nightly by a plague of whitefly, Each day I got rid of them but they were always back next day.This year I have built raised beds and intend to cover again with smaller mesh netting but am worried about whiteflies which are tiny.Suggestions please

[Florence Fennel]

Enviromesh?

[Two_Sheds]

you could try the garlic & chilli spray

[gojiberry]

At least you don't seem to have clubroot. Enviromash is fine enough to keep out whitefly.
You just need to make sure you don't leave any gaps.

Ian

[Aberdeenplotter]

stick in a few french marigolds inside your environmeshed area. Even if you leave afew gaps, these should keep whitefly away

[Jono]

stick in a few french marigolds inside your environmeshed area. Even if you leave afew gaps, these should keep whitefly away

Definitely try this. I grouped all my brassicas togetherm and then planted African marigolds in and around them. Hardly had any trouble at all. Will be trying this tactic again this year.

[allotment sue]

I have loads of problems with whitefly too. Am going to try Two Sheds chilli and garlic spray this year. Has anyone else tried it?
Allotment Sue

[raygrape]

thank you everyone for your advice it makes sence I will try a 3 pronged attack

[Two_Sheds]

stick in a few french marigolds inside your environmeshed area.

I've done this for several years - it doesn't work