Domino Peace Lily (Spathyllums) is a uniquely variegated version of the common Peace Lily. We recommend this houseplant to any beginner plant owner because it is very hardy and easy to grow. The variegation on the leaves is a marbled mixture of white and deep green. Spathyllums are known for their air-purifying qualities and ability to remove toxins from the air. Try placing them in an office, living room, or bedroom for a beautiful pop of greenery and white flowers. Peace Lily houseplants are one of the very few houseplants that will flower indoors. The only time these plants will not flower inside is if they are kept in low light conditions.