O most wizened one, way to not answer the question.
If you want to solve red thread issues, don't use grass varieties that are susceptible to red thread.
Right plant, right place.
You don't plant a cattail in the middle of the desert or a cactus in a swamp.
“Every step we take towards making the State the Caretaker of our lives,
by that much we move toward making the State our Master.”
~Dwight D. Eisenhower