Disclosed is a plant support device having a wire construction and a rectangular cross section that tapers from an upper region to a base region. The device comprises a plurality of rectangular support members attaching at their corners to upstanding post members forming a wire cage that supports a growing plant within its internal volume. The base region includes a plurality of downwardly elongated stake members that are adapted to be depressed into a soil surface, while a plurality of stake extension members are further provided for elevating the overall structure as the plant grows and requires more elevated support. The extension members are stake members having a stake receiving post and a threaded set screw for securing the extension to the base of each ground stake.
