My Monkey Grass Is Turning Brown. Too Much Water Or To Little In The Hot Weather?

Question

The grass is in direct sun most of the day. The days are hot

Answer 1

It should be able to handle heat and drought, so I suspect overwatering. There are fungal diseases too that can result from too much water. Cut back on the watering and avoid overhead watering and see if that helps. This article tells more:

https://hgic.clemson.edu/factsheet/liriope/