National Park Service

Description

The park’s native plant communities are impacted by construction projects, visitor use, and the invasion of nonnative plant species. Volunteers play an integral role in preserving the park’s native vegetation by assisting with native seed collection and propagation, invasive plant removal, restoration projects, and the recovery program for Grand Canyon’s only endangered plant species, sentry milk-vetch (Astragalus cremnophylax var. cremnophylax).