Also on these boards
Flower bed border how-to: I'm currently struggling with a border on a sloped bed. I hope this will ease my frustration!
Aluminum edging for flower beds - almost disappears visually but keeps weeds out (you can even mow over it)
Paver edging makes a good barrier to keep grass from getting in the flower bed and a good path for the lawn mower, so edging the lawn shouldn't be required.
The Best Garden Bed Edging Tips. Lots of ideas, like laying flat bricks along a flower garden to make mowing easy.