[Robert Hudson]

The grass will spread via runners, so pretty much all you need to do is plant it initally and then let it spread and pull it from areas you don't want it. Come to think of it, just about all foreground plants work this way.

Well, more or less, but if you spread out small plants or small bundles of plants, spacing them across the entire area you want filled in, it will fill in faster and more evenly than just letting it spread out from one spot. know what I mean?