I cannot seem to find any thing on these leaf spots. They are all over, and appear blueish from an angle. The spots are flat, and are not on the underside of the leaf. The leaves are curled but not yellowing, or wilting. The plant is a Black Prince, an heirloom breed. It has been very hot with little rain. I water in the evening, but I always check the soil to make sure it actually needs water. I appreciate any advice.
Kind regards, Joe