Horticulture

The Environmental Horticulture Program promotes sound plant health care in our urbanized county, with an emphasis on Integrated Pest Management (IPM) principles. Clientele include landscape architects, landscape contractors, tree services, urban foresters and public park/watershed agency staff.

Japanese knotweed, an invasive plant posing severe risks to the environment and property, has been identified in Marin County, in the San Geronimo Valley & Lagunitas Creek Watersheds. Learn more on the MKAT website.

Steven Swain is the Environmental Horticulture Advisor for Marin and Sonoma counties. He got his start in commercial arboriculture working with Lewis Tree Service in Santa Cruz. After graduate school, he worked in Sonoma County as the Sudden Oak Death Project Coordinator, before moving on to research composting as a means of eradicating Phytophthora ramorum from infected greenwaste at UC Berkeley.

Contact: Steve Swain, Environmental Horticulture Advisor

(415) 473-4204 svswain@ucanr.edu