New Trees for a Changing Climate

@ Fillmore Nursery Tree Tour
on Friday, June 10, 2022
in Fillmore, CA

Register Here
Join us for a walking tour of Devil Mountain's growing grounds guided by David Teuschler, Dave Muffly, and Dr. Matt Ritter. Lunch to follow.

About this event

David Teuschler, Dave Muffly, and Dr. Matt Ritter will guide a walking tour of Devil Mountain’s growing grounds with a focus on new tree selections for a changing climate and growing practices that build a superior root system. A taco lunch will immediately follow the tour. 3 CEUs available for I.S.A. Certification holders.


9:30am Morning Refreshments & Networking

10:00am-1:00pm Walking Tour

1:00pm Taco Truck


Tour Topics

Growing Healthy Roots | David Teuschler

Climate Change and California | Dave Muffly

New Oaks | Dave Muffly

New Eucalyptus and Other Subtropicals | Dr. Matt Ritter

Other Cool Trees | David Teuschler, Dave Muffly, Dr. Matt Ritter


Learn more about our Presenters:

Fillmore Nursery Tree Tour: New Trees for a Changing Climate image

David Teuschler is the Chief Horticulturist for Devil Mountain Wholesale Nursery. He established the nursery’s propagation program and directs the propagation and inventory teams for the company’s ten locations. David has worked in the nursery industry for three decades, including many years at Valley Crest Tree Company. While there, he served as Plant Health Care Manager for the Specimen Tree Division, Account Manager in the Estate Gardens Division, and, most notably, Chief Arborist for the Apple contract grow, responsible for growing over 7,000 trees – half from seed – for installation at the Apple campus in Cupertino, CA. David is a Certified Arborist and a member of the Western Chapter of the I.S.A. and the I.P.P.S. He is a 3rd generation Californian and has a BS in Ornamental Horticulture from California State University, Fresno.

Fillmore Nursery Tree Tour: New Trees for a Changing Climate image

Dave Muffly has been planting trees (especially oaks) in the Bay Area and other California locations for more than thirty years. Dave began his tree career where he received his undergraduate degree in mechanical engineering, Stanford University. Moving from engineering to ecology, Dave managed native oak tree planting and maintenance with the non-profit Magic, in a project that has yielded more than four thousand established oaks in forty years. Dave then branched into fruit trees, and urban tree plantings, with a special focus on street trees. Dave subsequently became a Board Certified Master Arborist, and designed the award-winning 101 Freeway Soundwall planting, as part of the East Palo Alto Tree Initiative, led by the non-profit Canopy. This radical thousand-tree drought and climate change adaptation planting succeeded far beyond expectations, and helped lay the foundation for the changes reverberating through the California tree nursery industry today. The East Palo Alto Tree Initiative became the proof of concept for the even more radically diverse plantings at Apple Park in Cupertino, where Dave spent seven years as Apple's Senior Arborist. While there, Dave oversaw the acquisition and planting of nearly ten thousand trees - ranging from saplings to sixty foot oaks and one hundred foot redwoods. Today Dave works as an independent tree scientist, arborist, and ecologist at Oaktopia.


Fillmore Nursery Tree Tour: New Trees for a Changing Climate image

Dr. Matt Ritter is a botany professor in the Biological Sciences Department at Cal Poly in San Luis Obispo, California, where he studies California’s native plants and trees in the urban forest. He’s the author of several fiction and non-fiction books, including the best selling guide to California’s flora, California Plants: A Guide to our Iconic Flora ( He also wrote the funniest and best-selling guide to California’s urban forest, A Californian’s Guide to the Trees among Us (Heyday, 2011). He won the Cal Poly’s Distinguished Teaching Award and the International Society of Arboriculture Award for Excellence in Education. He’s an avid woodworker, mason, and gardener.

Getting There

Parking is available at the nursery, follow the signs once you enter the nursery to reach our Event Guest Parking.



Fillmore Nursery Tree Tour
3200 West Telegraph Rd
Fillmore, CA