Abstract: An automatic soil waterer, especially for potted plants, having an airtight water supply chamber with a discharge into the soil controlled by a hydrophilic probe element followed by a hydrophobic element, preferably with an entrapment chamber therebetween, passing soil air into the water supply chamber, thereby discharging a proportional amount of water into the soil, there being water discharge control by means of a well open to the water supply chamber discharge and with a capillary wick therein exposed to the rise of water in the well and extending into the soil to wet the same.

Abstract: A controlled wick waterer for planter pots wherein at least one pair of opposed rails restricts capillary flow through the wick, and improved by at least one rail opposed by a pair of rails with interengagement of the rails for diagonal compression along two lines transversely of the wick, and any multiple of said at least one rail opposed by a pair of rails, carried by a platform over a reservoir within a pot and with manual access and level indication for filling and adjustment of pressure controlling the rail pressure upon the wick therebetween.