Is there something like organic fungicide?

[dina]

Hi,
one of my bush roses has black spots(fungal infection). ALL the leaves are infected. It would be difficult to take each leaf so maybe I should prune it.

Is there anything else I could use organically since I wouldnt like to use chemicals? Some advise,please.
Dina

[Kisal]

I posted a link for you on the Rose forum.

[cynthia_h]

I'm locking this thread to avoid duplicate discussion.

Cynthia H.
Sunset Zone 17, USDA Zone 9