Winter Grasses in Zoysia Grass

Question

I have winter grasses in my zoysia that I have sprayed with Princep and it did not kill the winter grasses and/or weeds. I need to know what to spray on my grass to kill these weeds that will not kill the zoysia. I live in south Arkansas.

Answer 1

The only way I know of is to treat warm weather grass in late winter with Round-Up, when it starts to turn green and the zoysia is still brown. You will need to spot treat, not treat the lawn wholesale.