If you're looking for top of the line, professional grade edging for your landscape, go no further than ProLine. Their invisible aluminum landscape edgings sink into the ground, creating a clean edge without any clear and visible material. The aluminum is a light, commerical grade that makes it easy to handle and shape, but is also extremely strong. No sneaky plant roots are going to get by this edging!

ProLine designs all of its edging with a unique stake-less connection system that snaps to interlock the sections next to each other. This means that the pieces won't separate, and there won't be any weak points along the section of edging.
— Vanessa Brunner