The snake plant is sometimes called mother-in-law’s tongue due to its sharp, sword-like leaves that grow upright. The snake plant can help curb foul odours, leaving the home smelling pleasant. How to care for it: The snake plant is probably the hardest plant to kill. It only needs watering when the soil is almost dry. It can grow under any sort of light but preferably in bright or low light spots. Avoid keeping it in the shade, as that can inhibit its growth.