Our darkest Mother-in-law¡¯s tongue is also our tallest, growing up to 3¡¯ with narrow upward pointing leaves marked with gray-green wavy bands on a deeper green background. Color is darker, almost black, in lower light levels, and tends to be more pronounced on newer foliage. One of the very easiest houseplants you can grow, sansevieria practically thrives on neglect. Prefers indirect medium to low light. Allow to dry between watering. Plants benefit from having their leaves wiped down periodically.