Most people water their plants from the top, even though plants actually absorb water from the bottom-up. Self-watering planters, provide water reservoirs that sit at the bottom of a pot to be drawn from as needed through a process called capillary action. A plant's root system ...Most people water their plants from the top, even though plants actually absorb water from the bottom-up.
Self-watering planters, provide water reservoirs that sit at the bottom of a pot to be drawn from as needed through a process called capillary action. A plant's root system attracts water from the pot reservoir and transports it upward due. Self-watering planters keep the water supply separate from your actual plant and they don't drown roots.