Characterized by fast growth, high seed production and a lack of natural competition, invasive non-native plants, sometimes referred to as weeds, rapidly spread and displace native plants and animals, including rare, threatened, and endangered species.
Mt. Tam boasts expansive tracts of grasslands, chaparral, and forests that are relatively weed-free. These precious refuges are home to many species that are declining elsewhere in California, but their proximity to populated areas means that they are subject to a continuous influx of non-native invasive plants.
Managers must often stop at jurisdictional lines when managing weeds. Systematically removing weeds when they first crop up is among the most efficient ways to protect Mt. Tam’s legacy landscapes, but there must also be years of follow-up to keep dormant seeds and roots from reestablishing.
Mt. Tam’s land managers’ ongoing weed control efforts have been hindered by a shortage of staff, funding, and interagency coordination. A holistic One Tam Weed Management Program fills these needs and build on successful existing models to find and eliminate priority weeds and engage volunteers in caring for Mt. Tam.