Dan Simpson


  • Ornamental Horticulture

Contact Info:




OH 260  Arboriculture


OH 261  Tree Surgery and Specialized Pruning


OH 262  Arboriculture - Palms and Related Plants


OH 263  Urban Forestry


OH 290  Cooperative Work Experience



Professional History:

Lead Tree Trimmer, San Diego Zoo
35+ years, began as a tree trimmer and no the Associate Horticulturist


Certified Arborist, International Society of Arboriculture.
Serves on Board of Directors for Professional Tree Care Association of San Diego Mayoral Appointment as Arborist on City of San Diego Community Forest Advisory Board, Horticulture articles and photos published in San Diego Zoo's Zoonooz.
Lectures on topics related to tree care, horticulture, urban forestry, and xeriscape