how to sow ornamental grass seeds?
I'm wanting to start some purple fountain grass from seed. It's an annual here, but I'd like to have a large tuft for the year (maybe 3-4 feet around). I understand the basics of sowing it in tufts, but still unclear how to ensure I get a good size. Should I sow a 3- to 4-foot-square area, or will just 2 feet square spread as it grows? Should I sow several small plugs close together? What's the easiest way to do this?