Buddleja davidii

Buddleja davidii_Louis-M. Landry
Photo courtesy Louis M. Landry

Common names: butterfly bush

Buddleja davidii (butterfly bush) is a shrub (family Buddlejaceae) with a cluster of pink to purple flowers and narrow leaves found in the San Francisco Bay area and coastal ranges of California, and is invasive in the Pacific Northwest. It is native to China. It favors riparian and bottomland habitat. It is highly regenerative and can spread via dumped garden waste. Seeds are retained on the plant over the winter and they are released in early spring or summer. Seed dispersal can start in late autumn or early winter.

Cal-IPC Rating: Watch

Cal-IPC Assessment

Plant Risk Assessment - An evaluation of the potential for a plant to be invasive in California.

Weed RIC Management Notes

  • Management Notes - Information on management techniques and effectiveness from the University of California Cooperative Extension’s Weed Research & Information Center.

Cal-IPC Newsletter Articles

Cal-IPC Symposium Presentations

There are no Symposium presentations associated with this species yet.

Other Buddleja davidii Information