Hoya Kerrii

Every Valentine's Day, stores sell single heart-shaped Hoya leaves in cute pots. Here's the thing: those will never grow. They're cut without a node, rooted to look alive, and sold knowing full well the leaf will just sit there until it dies. It's one of the oldest tricks in the plant industry, and it works every February like clockwork.

Hoya flower spurs are persistent, meaning the same little woody nub blooms again every season. If you deadhead the flowers and accidentally cut the spur, you just cost yourself years of blooms. Hands off!

In the wild across Thailand, Laos, Cambodia, and Vietnam, Hoya kerrii is a climbing vine with leaves way bigger than anything you see in pots. The nursery versions are juveniles that never reach full size indoors.