What causes the relatively common garden problem known as "blossom end rot"?
Answer Calcium imbalance
The water-soaked spots at the blossom end of tomatoes, peppers, squash, cucumbers, and melons is a tell-tale sign of blossom end rot, which is caused by a calcium imbalance within the plant.
Asked by Rachel Bortles · Last updated 5 years ago · 3.1K views · SOURCE