Pacific Northwest Gardening: What divides your yard from your gardens, I need a clue., 0 by Soferdig

Soferdig wrote:
My grass borders have vertical rocks dug down about 4 to 6" deep and then flat sandstone 8 to 14" wide. When the grass gets into the edge of the sandstone we spray it with roundup and then rake the dead stuff about a week later so just soil shown. Any crab or quack grass we hand dig to prevent runners. The sprayed grass on the left and the after look of the raked off dead stuff on the right.
As far as pathways I like to use wood chips and bark. The nitrogen suck of the wood keeps the grass and weeds down. Most of my pathways are rock through the garden.