Deb Guenther



As a partner and landscape architect at Mithun, Deb has built a team that brings exceptional quality, critical thinking and award-winning design to projects. Deb is committed to connecting people with their surroundings and each other. She works on diverse projects — delivering conceptual design ideas firm-wide. Clients benefit from her ability to bring together emerging ideas in policy, practice and design.

Deb is a regular contributor to conversations on equity, resilience and climate change at venues such as Greenbuild, Living Futures, and the Urban Land Institute. Nationally recognized for her leadership on green infrastructure and ecosystem service issues, she was awarded the American Society of Landscape Architect’s Presidents Medal in 2010.


  • University of Denver — Graduate Studies
  • Michigan State University — Bachelor of Science Landscape Architecture

Memberships And Accreditations

  • American Society of Landscape Architects, Fellow


  • Cascadia Region Green Building Council, Fellow
  • Ecodistricts, Board Member
  • Landscape Architecture Foundation, Research Committee Member and Board Emeritus
  • Seattle Arts Commission, Past Commissioner
  • Sustainable Sites Initiative, ASLA Representative and Technical Committee Member