You could try the dilute milk spray and see how that goes (1 part milk
to 9 parts water - works for powdery mildew on squash). Also removing
affected leaves and putting them in the bin. Don't water overhead if
you can help it.

HTH
Tish

On Thu, 19 Dec 2002 21:54:46 +1100, "Joe Blow" wrote:

Hello everyone,

Can anyone suggest an organic cure for the dreaded black spot on roses
suitable for bushes in Tasmania?

Thanks!

Joe Blow