Growing houseplants with dark green leaves is a fun winter pastime and you have so many to choose from! If you want to add some more colorful houseplants into a room in your home that gets low to medium light throughout the day, you might try plants with spathes. A spathe is a modified leaf - like the kinds found on a poinsettia plant. Spathes stay colorful for months and tend to bloom in winter and early spring.