What do sage grass look like?

It seems you're asking about "sage grass," but that's not a common name for any particular plant.

Do you mean sagebrush? That's a very common plant in the western US, and it's actually a shrub, not a grass.

Sagebrush has:

* Silvery-green, feathery leaves that smell strongly of sage.

* Small, yellow flowers that grow in clusters.

* Woody stems that can grow up to 3 feet tall.

If you're thinking of a different plant, please provide more details about its appearance or location, and I'll do my best to identify it!