The spots are circular and small, about 1/16 to 1/4 inch in diameter. The tan to grey spots have dark brown margins with tiny black dots (fungal fruiting bodies) in the center of the spot.

If your tomatoes have developed faint green or yellow spots or rings, the plant could have fallen victim to ghost spot, also known as the grey mould fungus Botrytis cinerea, whose spores are spread by ...