10 Inch Tall Square Black Plastic Cymbidium Pot - 3 Pack 3 Pots, 4" Wide by 10" High Made of durable, black plastic. Extra large drainage holes on bottom of the pot allow for fast drainage and good air circulation around the roots. Slight inward tapering from top to bottom of pot helps direct water flow towards the bottom center. Line the bottom of the pot with sphagnum moss or wire mesh in order to keep the orchid media in the pot.