Abstract: A plant cage apparatus is set forth wherein a matrix of interconnected vertical and horizontal arcuate rod members are interconnected at junctures by connector members wherein the connector members slidingly accept ends of respective horizontal and vertical members to enable expansion or contraction of the cage apparatus to accommodate plant growth. Terminal ends of respective horizontal members defining terminal junctions of a respective cage structure along one vertical perimeter are formed with projecting tapered ends at the cage and connector members are formed at the other vertical perimeter side of the cage. The connector members accommodate the tapered end portions for joinder of two respective semi-cylindrical cage structures to form a continuous cage apparatus.