US Patent 7533493 Method and apparatus for growing plants

Method and apparatus for growing plants wherein a spherical array of seeds or seedlings radially face the center of the sphere and a growth promoting light source is generally at the center of the sphere; plant growth is promoted and approximately equal weight distribution among growing plants is maintained by rotating the sphere on its horizontal axis around the light source, simultaneously delivering water optionally containing plant nutrients to all the seeds or seedlings and regulating the light source during periods of plant growth and non-growth.