Abstract: A height adjustable plant support device for supporting and confining vegetables, flowers and other plants therein is disclosed. The device includes a pair of generally circular end rings and a coil constructed of flexible material such as plastic having constant diameter throughout its length connected between said end rings. In a first embodiment, a pair of spaced apart stakes are used to support the rings while in a second embodiment, the rings are supported by a single stake projecting through the middle of the rings and coil. In the first example, a first pair of clamps are slidably connected to the lower end portions of the stakes and contain hooks which open downwardly to confine a lower one of the end rings therein at or near ground level while a second pair of clamps are slidably connected to the upper end portions of the stakes and contain hooks which open upwardly to support an upper one of said end rings therein at a desired position spaced above the lower end ring.