Plantagon International AB is a Swedish company founded by Hans Hassle and the native American tribe Onondaga Nation on January 29, 2008. Onondaga Nation owns 85% of the company and SWECORP Citizenship Stockholm owns 15%. Oren R. Lyons is chairman of the board and Hans Hassle is CEO. The company is developing technologies for greenhouse cultivation in large urban areas, so-called vertical farming.
Plantagon is structured as a "Companization" which is one non-profit and one for-profit organization combined under a model developed by Hans Hassle. The company's ownership, control, and statutes have been adapted to a social role where the company takes a broad responsibility for the common beyond that which is mandatory under law.
Plantagon gained alot of attention in 2011 when they introduced the design for a massive urban greenhouse contained within a geodesic dome. The vertical farm consists of a spiral ramp inside a spherical dome and is designed for growing large amounts of crops within an urban setting.