Sansevieria (also known as Mother-in-Law's tongue) "That is the all-time indestructible houseplant. It is gorgeous. It's very modern," Debra Prinzing says. It's a great plant for someone who wants something contemporary, geometric and sculptural &mdash and it looks great in a pot. It likes bright light, but Debra has seen it survive in a shadowy spot in her home. Note: Toxic to cats, dogs and horses, says the ASPCA.