[Mikeod]

Are you sure it is Bermuda? My zoysia lawn has torpedo grass in it. This grass looks somewhat like Bermuda in that is spreads horizontally by runners. But it is more coarse than Bermuda, almost like St. Augustine. I was told that this grass commonly hitches a ride in the zoysia sod and will make itself apparent months after the sod is laid. I have tried all sorts of controls and nothing I can buy helps. Zoysia Green has tried some controls, but it is still there.

I've adopted the same philosophy as posted above. Since it's green, mow it.