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12360 SW. Main St. Suite 300 Tigard

The Western Invasive Plant Alliance

A Non-profit Dedicated to Preventing the Introduction and Spread of Invasive Plants

Why Worry about “Weeds?”

Anyone with a garden or lawn can tell you that  invasive plants, or “weeds,” are a costly nuisance, but many people don’t realize that invasive plants cause tremendous harm to our economy, environment, and even health. Invasive plants threaten native biodiversity, degrade fish and wildlife habitat, reduce the value of ecosystem services, and decrease the usefulness and productivity of agricultural lands, forests and fisheries.  Each year, county, state, and federal agencies spend hundreds of millions of dollars controlling weeds, and untold additional dollars are lost by businesses and landowners to the damage caused by invasive plants.

Filling a Gap – A New Nonprofit in the West:

Numerous organizations exist to address a multitude of environmental problems across the Western U.S. Some provide a focus on science to inform policy, others are grounded in outreach and education, and others concentrate on legislation and litigation – but until now, none have focused specifically on protecting the western economy and environment from weeds. To fill this much-needed gap, the Western Invasive Plant Alliance (WIPA) is dedicated to preventing the introduction and spread of invasive plants in the Western U.S.

Banner Photo: John M. Randall, The Nature Conservancy,