black spots on watermelon leaves
I've never done this before, but I'm trying to grow a moon and stars watermelon in a container on my deck. It's been doing really well, with guite a few blossoms and one baseball size watermelon fruit so far. Yesterday it looked fine. Today there are small black spots all over every single leaf. What happened and how do I save this plant?!!! It's set in full sun, and is getting plenty of water with the soil being allowed to dry out slightly, but not completely, before watering again. The basil next to it is fine, but the mint on the other side of the watermelon also has the black spots.