Exploring Nature in the San Francisco Bay Area
Winter Issue 2012

Containing an Invasive Weed at Thornewood Preserve

Thornewood Open Space Preserve above the town of Woodside isn’t easy to find–unless you’re a weed. This area is the only site in California where the plant has been found, but this invasive perennial bunchgrass native to Eurasia and North Africa has infested 10,000 acres in Oregon. A project from the Midpeninsula Regional Open Space District aims to make sure that doesn’t happen here.