Apollo Plastics E006OLIVE Eezy-Gro Self-Watering Planter, 6-Inch, Olive Self-watering planters that keep plants moist for up to four weeks Avoid deadly overwatering of planters Produce healthier plants Spend less time watering and take vacations free from worry The unique polycotton wick absorbs water like a sponge from the reservoir at the base, drawing water up to the plant roots