Buffalo grass is grown from runners, just go and buy a couple of square metres and pull them apart same for couch. I find seed does not take here in Qld as it dries out too fast or the birds eat it, and those big thunderstorms wash it away....MM.

Excellent! Sounds like a much easier method. Is it better to go to a turf specialist? Can you get buffalo from Bunnings?

Yes they sell that Sir Walter Buffalo but they may have to order it..MM.