Ken Nentwig

Courses Taught

Ken 200

Rainwater Harvesting & Management - online
Landscape Design Basics with Sketchup Pro - online
Ecological Landscape Design - online, co-facilitator
Gaia College, online facilitator


University of Guelph, Ridgetown Campus, College Professor
Landscape Architect and Educator (retired)


As a ‘retired’ landscape architect and educator, Ken relocated to Vancouver Island from Ontario in 2010. His four-plus decades in land planning and/or education included major land development projects and seventeen years with the University of Guelph, Ridgetown Campus, as College Professor. Since that time he has developed and facilitates online courses in Rainwater Management and in Landscape Design Basics with Sketchup Pro for Gaia College, which were also offered through Royal Roads University (BC), and Humber and Seneca Colleges (ON). With CANARM, Ken created and delivered a Canadian rainwater harvesting certification course, now superseded by the ARCSA Accredited Professional (AP) program.

Other ‘hats’ include trainer for ARCSA; the previous position of Executive Director for the Society for Organic Urban Land Care; and co-facilitator for Ecological Landscape Design (Gaia College). As a consultant, Ken undertakes landscape and site planning, along with rainwater harvesting system planning in association with landscape contractors, builders, and rainwater specialists. Other interests include watercolours and pencil/ink sketching, and with his wife he is very active in their church.