The wicking bed, or self-watering garden, is not that mirage of water in the desert. Rather, it is one of the most user-friendly growing infrastructures for all the lifestyle, time-poor, lazy gardeners out there.
Using the age-old idea of capillary action, water in a reservoir below is drawn up and into the soil, to be used by the plants as required. Ever dipped a tissue in a glass of water and watched the moisture climb up the fibres, defying gravity? A wicking bed works in the same way.