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Aug 5, 2020 10:50 PM CST
|Planted my roses this spring. They came on strong and healthy. Just last week started developing this issue. Some have lost 1/8th of their leaves to this issue. I've used a fungicide twice now. Just need to confirm if this is black spot or not.
Coastal Southern California (Zone 13a)
Aug 6, 2020 9:43 AM CST
|Don't think that's blackspot. Some of it looks like physical damage, and I think you've got spider mites.
For the latter, wash with a hose, upward, from the base, as they are UNDER the leaves.
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