7 Houseplants that don't require drainage

Club Moss, Selaginella kraussiana

Club moss grows well in the tropics in shade and moist, wet soils, making it a good houseplant for a dish garden without drainage. It also needs higher humidity, so consider putting it in a bathroom.

Club moss is easy to root as roots form along the stems. According to North Carolina State Extension, cold water can shock this plant, so always use room temperature water.