Why Is Blossom-End Rot Appearing After Weeks of Healthy Growth?

A close-up photo of a tomato with blossom-end rot showing the dark sunken patch on the fruit’s bottom. The image highlights how inconsistent watering and nutrient movement can affect otherwise healthy plants – Shutterstock

A tomato plant can look like the picture of garden success for weeks, then suddenly produce fruit with a dark, sunken patch on the bottom. Blossom-end rot often feels like a surprise attack, but this common garden problem follows a pattern that gardeners can spot and fix.

Blossom-end rot does not mean the plant has failed or the harvest has disappeared. A few changes in watering habits, soil care, and plant maintenance can help protect new fruit and keep the garden season moving in the right direction.