These Hydrofarm planters show just how hip it is to be square. Use them inside and out of the home?̥ÌÎ_to house a wide range of media, from soil-based growing to perlite and clay pebbles. The sturdy plastic, sized at 5 1/2"?̥ÌÎ_square by 5 1/2" tall, lets water flow from the bottom holes. Black color keeps light and warmth in to stimulate the growing process.