An apparatus includes container having an open top, a lower end portion with a drain opening, and an interior growing space vertically between the open top and the lower end portion. A lid is received over the open top of the container. A plant retainer is supported on the lid, and retains a plant in a growing position in which the stem reaches vertically through the retainer and the roots reach downward from the stem. A plant feeder device is located beneath the retainer to emit water beside the plant. A root trellis reaches across the interior growing space beneath the feeder device. The root trellis has an inner portion aligned vertically with the retainer, an outer portion surrounding the inner portion, and a cross-sectional profile inclined vertically from the inner portion to the outer portion.
