If you garden to any extent, sooner or later you will encounter a hypertufa planter. If you are unfamiliar with hypertufa, it is a lightweight stone-like material made from Portland cement, peat moss ...

Hypertufa sounds like a plant disease, but it's not; it's something that you might want to bring into your garden. The name comes from "tufa," a porous, lightweight, soft rock. It's easy to gouge out ...