I'm about to get a delivery of 100 plugs of cauliflower and cabbage, but my
normal supplier of CR Control, say it's now banned by the Gov.

He suggests using collars, which stops the maggots reaching down into the
roots - but is there an alternative on-line. I'd prefer to use a dip
treatment. I can't imagine farmers putting collars on fields of brassicas.

Bertie