Snake Plant, Indoor ~12 inches (per plant)
If you're looking for an easy-care houseplant, you can't do much better than snake plant. This hardy indoor is still popular today -- generations of gardeners have called it a favorite -- because of how adaptable it is to a wide range of growing conditions. Most snake plant varieties have stiff, upright, sword-like leaves.
Grow snake plant in just about any room of your home. While it tolerates low light, snake plant grows fastest in bright conditions.
As long as you water it now and again, it's tough to underwater this hardy houseplant. Water snake plant when the top inch or so of the soil dries. Take care not to overwater it -- allow the top inch of the potting mix to dry in between waterings.