Remove Invasive Plants from Yosemite

Visitors, volunteers, and youth work crews help track and clear invasive weeds, such as this blackberry, to protect Yosemite’s beautiful native wildflowers

Invasive plants are the single largest threat to Yosemite’s beautiful native wildflowers. Invasive species use up valuable resources and can eventually replace native plant populations, throwing entire ecosystems out of balance.

By disrupting ecosystems, invasive plants also can displace wildlife species that are dependent on native plants for food and shelter. Every year brings new invaders, with more than 200 non-native species covering more than 6,000 acres of valuable habitat.

This year, the Conservancy will fund the expansion of the park’s survey and treatment efforts into the wilderness. A smartphone app has been developed to assist with the collection of information. You can help by carrying your smartphone and mapping plants as you hike. Every infestation found and treated will protect ecosystem health for future generations to experience.

Your support helps protect Yosemite’s beautiful native wildflowers.

Partnering with Yosemite National Park.

More Habitat Restoration Projects

Project Notes

Himalayan blackberry has displaced more than 100 acres of native vegetation in meadow and riparian areas with high plant and animal diversity. Yellow star thistle has displaced many native plants, reduced the food supply for wild animals  — the sharp spines stop hikers from even walking through it.

Garrett Dickman
Yosemite National Park