This time of year, tons of free plants are waiting for you to claim them—and they’re sitting right in your own yard. It’s one small upside to fall yard cleanup: All those perennials you’ve been ...

Q: How do I divide the “pups” from my potted and garden-planted aloe, cactus and agave plants without harming the mother plant? I heard you were just supposed to twist them off with some roots, but it ...