(No, wise guy, not talking about smokin' da rope)
Eureka! I have found it! The way to make grass.
Actually, I had the materials laying around for years, but finally tried it.
All ya gotta do is dye white velvet a nice grass color, using ordinary (at least in the US) Rit dye.
I'm still playing with the color: "Kelly green" is a bit too dark. But dang--it really does look like grass! Has that shimmery, undulating quality that a nice unmown field of grass has.
Onward!
D "Steve" N