Last week the question was: Whats wrong with this tomato?
Blossom end rot occurs when there is a localized calcium deficiency in the fruit. Blossom end rot does not necessarily mean there is a calcium deficiency in the soil. Instead, it usually means the plant is not receiving regular watering, making the plant unable to transport calcium to the fruit. The best way to reduce blossom end rot is to make sure your plants are getting regular and adequate water.
Here is this week’s question: What caused the wart-like growth on the inner wall of this cotton boll?