Endorsing Organizations

  • West Coast Arborists
  • Cavity Conservation Initiative
  • HortScience
  • California Audubon
  • Golden Gate Audubon
  • Pomona Valley Audubon Society
  • San Diego Audubon
  • Santa Barbara Audubon
  • San Fernando Valley Audubon
  • Altacal Audubon
  • Sandy deSimone PhD, Director of Research and Education, Starr Ranch
  • Jim Skiera, International Society of Arboriculture
  • Ray Morneau, Ray Morneau Arborists
  • Donna Lee Ekstrom, DRT consulting
  • Elizabeth Mendoza, San Antonio College
  • Bella Acosta, Disney Parks and Resorts
  • Roy Leggitt, Tree Management Experts
  • Paradise Birding
  • Luke Midura City Forester
  • John Pavlik, Branch Tree Management
  • Sergio Cervantes, Los Angeles County Public Works
  • Michael Castro, Los Angeles County Public Works
  • Lori Gavitt, The Reserve Club
  • Jamie Nashima, Nashima Designs
  • David Diaz, David’s Tree Service
  • Matt Green, David’s Tree Service
  • Emily Spillett, Davey Tree Service
  • Anne Fenkner, Davey Tree Service
  • Riverside-Corona Resource Conservation District
  • Oroville Community Trees
  • Effie Yeaw Nature Center
  • Southern California Bluebird Club
  • Sims Tree Health Specialists, Inc.
  • Sims Tree Learning Center
  • Merlin Arborist Group
  • TreePeople