what causes dark spots around the stem of tomatoes
Conquer Blossom End Rot. If you see a dark, rotting spot on the bottom of your tomatoes, itâs blossom-end rot. This problem, caused by a calcium deficiency, can be solved a few ways. When tomatoes, peppers, melons, and eggplant develop a sunken, rotten spot on the end of the fruit, the cause came long before you found the problem. Itâs called blossom end rot, and here is why it happens.
Fungal Leaf & Fruit Spots of Tomato I. There are many fungi that cause leaf and fruit spots on tomatoes. The ones described here are similar in that they do not have obvious fungal growth on either the leaf or the fruit spots.