Since 2005, Weppelmann has focused primarily on the meaning of garden culture and its role in the development of human existence. Weppelmann’s artist projects are interdisciplinary, as he brings a wide variety of disciplines together. Conceptual art, performance art, video art, photographic art, garden art and installation are often included in an overall staging and complemented by an independently curated cultural program
Subversion as an artistic strategy often emphasizes the critical and political statement of his work.
Since 2005, at all levels of his artistic work, the urban garden and urban green takes a pre-eminent position, these include: staged photography, interventions in public space, guerilla gardening, continuous art performances, soil and plant art installations, floating vegetable gardens and other garden creations that deal with historical themes. Central points of reference are the allotment garden, the vegetable culture and, accordingly, the self-sufficiency economy.