why are my tomato plant leaves turning yellow

Question

Some of my tomato leaves are turning yellow. This is the first time for me to grow a garden so I am trying to learn as I go.

Answer 1

There are a number of reasons for leaf yellowing in tomatoes. This article should help with pinpointing and correcting the cause of yours: https://www.gardeningknowhow.com/edible/vegetables/tomato/yellow-tomato-leaves.htm