Self watering planters make container gardening less labor intensive and save water while making water available on demand for your plants. By maintaining a reservoir of water at the bottom of the pot, separated by a porous plastic plate to hold soil above the water, plants get adequate water with no waste. Most come with a gauge that shows when water is needed that fits inside the watering tube. Just pour water into the tube to keep your plants going.
When you are away from home, self watering planters keep plants hydrated for several days, so they are ideal for business or weekend trips and cut down on the times plants must be watered by others for longer trips. They can be used indoors or outdoors, so they are ideal for over wintering tender perennials. Larger pots can be used on patios or balconies. Light weight soil mixes are available to lighten the load on balconies and roof tops.