Where are you located and what has the weather been like?

tj

The leaves look as if they have been scorched. Is there some sun being reflected off some glass somewhere? If not, have you thoroughly examined the leaves for signs of insects or tiny specks of poop? I'm thinking that spider mites could possibly suck the leaves to give them that effect.

Linda

Knowing your location would help. Southern California has had some intense heat waves. Leaves could be burned.

Would any frost or herbicide spray been possible to hit the leaves? If a disease, not much you can do.