An intresting remedy for cabbage root fly.

[Tiercel]

I have just lost all my Purple Sprouts to root fly.  So went digging on google to find out all I can about the fly. I came across this method that is used by Organic growers to combat the dreaded fly.
I think I will give it a go

http://www.gardenorganic.org.uk/organicveg/innovations/show_innov.php?id=1

[Tiercel]

[davyw1]

I think i will stick to my collars.