Abstract: Provided herein is a rotary plant growing apparatus. The apparatus includes a base and a cylindrical assembly supported by the base. The cylindrical assembly has an open first end and defines an interior growing chamber. The cylindrical assembly is also selectively rotatable relative to the base. A plurality of cartridge retention members are disposed on an inner said of the cylindrical assembly. An annular retention frame is disposed at the open first end of the cylindrical assembly and is formed with an opening. A selectively movable cartridge is retained in said interior growing chamber by the first cartridge retention member and the annular retention frame. The annular retention frame is dimensioned and positioned relative to the cylindrical assembly such that the selectively movable cartridge is only movable relative to said cylindrical assembly when the cartridge and said opening are longitudinally aligned.