Q.My basil is turning yellow
My basil is turning yellow. It’s planted in a large container with Miracle Grow soil. Can you tell me what might be the problem?

One of the most common causes of yellowing leaves is over-watering. I would review the following article which will give you specific guidelines on how to water your basil:
https://www.gardeningknowhow.com/edible/herbs/basil/basil-watering-tips.htm
If watering is not the issue, then this article will help you identify other possible causes:
https://www.gardeningknowhow.com/edible/herbs/basil/basil-diseases.htm