Posted: 12/05/2013 at 15:46
I get bad problems with sawflies too.they attacked gooseberries, roses, dahlias last year. I have just bought grow your own nematodes from the nemaslug company. They say that they are meant to do sawflies. dont knownif they will work but only cost about a fiver so thought I would give it a try. I used nemaslug last year with great success.