He emphasized maximum efficiency in his garden system, stressing that there was a complete connectivity with the systems of dwelling and the organic system of the garden. He incorporated an experimental farm and intensive "Siedlerschule" (settlement school) in his designs at the artists’ colony of Worpswede in 1926. He was also interested in utilizing sewage for fertilization, designing several versions of the urban outhouse, the "Metroklo". Both wastewater from the dwelling units as well as human feces from dry toilets were both captured to be used in the gardens at Worpswede.