A rotary plant growing apparatus is disclosed having a light emitting sourceoperableto emit light. The apparatus also has at least one retaining component and asupportoperable to support the at least one retaining component in spaced relation tothelight emitting source. A rotation mechanism is operable to rotate the at leastoneretaining component in a path around the light emitting source. Apositionadjustment mechanism is operable to move the at least one retaining componentalong a path extending between the at least one retaining component and thelightemitting source so to adjust the distance between the at least one retainingcomponent and the light emitting source.