I have an area layed out with a hose that I want to make a mini wildflower meadow. It is irregular shaped and aprox 200 square feet. I am curiouse what to use as an edging that will keep out the lawn grass. I plan to wildscape the entire property over a period of several years so a simple implimintation is desired. This is a brick hard clay soil. I attempted some stones but took about 2hrs just to get 3 in the ground and ruined my pick. Will native bunch grass fill in as an edge. I could run the tiller along the edge. Beats the hell out of me but done it before.