US Patent 10098293 Plant growing heavy weight bearing support assembly and apparatus

A plant growing apparatus includes a support assembly and a height control mechanism. The support assembly includes a plurality of platforms, a plurality of elongated posts spaced apart from one another about the plurality of platforms, and a plurality of support clips selectively attachable to the posts to support selected platforms at different heights along the posts. The plurality of platforms include a bottom platform supporting lower ends of the posts, a top platform supported on upper ends of the posts, and upper and lower platforms movable along the posts toward and away from the top and bottom platforms. The height control mechanism is mounted by the top platform and coupled to the upper platform such that it operates to selectively raise or lower the upper platform along the posts.