You built the swing set. You spread the mulch. And every week since, the yard has been taking it back. Rubber mulch in the grass. Wood chips in the flower bed. A bald patch spreading under the swings.
So you look at borders, and the options are grim. Landscape timbers splinter, rot, and weigh a ton. Steel edging has edges, right where kids run barefoot. And the cheap plastic stuff pops out of the ground the first time a mower clips it.
Here's the part nobody tells you
The mulch under a swing set isn't decoration. It's the cushion, and a cushion only works at depth. Every wheelbarrow load that migrates into the lawn makes the landing under the swings thinner. A border isn't about looks. It's what keeps your safety surfacing where you poured it, as deep as you poured it.
Frame It All playground borders were created by a landscape designer for exactly this job: contain the wood or rubber surfacing under a play area, without splinters, sharp edges, or chemicals in the ground.
