Wicky Grower Self-watering container. 20 gallon pot. 4 Pack. BlackThe Wicky Grower self-watering container has 3 pieces (25" Saucer, 20 gallon pot, and 17.5" Soil Separator) made from a blend of recycled and virgin plastic here in the USA. Water into the saucer at the bottom and the soil and roots wick the water up through the soil separator to feed the plant. 10 year warranty.