The people who once lived in Oakwood Valley planted rows of eucalyptus to mark boundaries and serve as windbreaks. Unattended for the past twenty years, these trees have grown into dense groves, some as large as five acres.

As the groves expand, which happens at a rate of 10–15 feet per year, they displace the oaks and local flora that serve as habitat for coyotes, butterflies, and other species who live in this special place.

Coordinated by the Park Stewardship program, volunteers at this site work to restore and preserve the ecological integrity of the valley, which is threatened by highly invasive non-native plants.