Okay, even the toughest plant is not indestructible, but with a few expert tips you can beat the odds. “You can kill anything,” says Sharon Nejman, senior horticulturist at the Chicago Botanic Garden. That includes giving a potted friend too much sun or H2O. “The roots can’t handle the absorption and start to rot,” she adds. Your best bet: Setting plants in gravel-filled saucers so they’re not sitting in extra water and built-up salt.