Does it take care of crabgrass?
From what I’ve seen...I think so.
I don’t have il zoysia, but neighbor does...and it is beautiful right now. Crabgrass doesn’t appear to be a problem for him. He never sprays and seldom fertilizes. He started with zoysia sod rather than plugs or overseeding. I had to build a small block wall with a 2 foot wide kill zone on my side to keep it from invading my yard. I just zap it with round-up when it makes it thru (or over) the wall.
I wanted to sod with zoysia in the spring this year but wife doesn’t like the brown dormancy in winter...so I’m stuck with fescue.