[safetrade]

is there any cure for it,i seem to have it on my over winter onions and am starting to worry as they are planted next to my show onions and normal onions ( all 500 of them) and I don't really want to pull them all up.

[Yorkie]

No chemicals available, I'm afraid 

http://www.rhs.org.uk/advice/profile?pid=743

[Aunt Sally]

I think I'd be tempted to carefully remove the over winter onions to protect the other ones.

[safetrade]

thanks,i wasnt sure if dithane 945 would stop it spreading to the others but it seems as though they are doomed as its already spreading.