Tomatoes Getting a Brown Spiral Line

Question

Why are my tomatoes getting a brown spiral line starting at top and going around? This line spirals around top of tomato and ends with a spilt down the side.

Answer 1

This is called cracking. This article will explain why it happens and how to help with it:
https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-cracking.htm