California Native Plant Society – www.calscape.org
Theodore Payne Foundation, Sun Valley – www.TheodorePayne.org
Tree People, Beverly Hills– https://www.treepeople.org
LA County Natural History Museum, Downtown LA – https://nhm.org
Tree of Life Nursery, San Juan Capistrano – www.californianativeplants.com
Las Pilitas Nursery – www.laspilitas.com
Santa Barbara Botanic Garden, Claremont – www.sbbg.org
Don’t Plant a Pest – California Invasive Plant Council https://www.cal-ipc.org