Promote · Protect · Preserve

Guardians of Lodi's Urban Forest

Tree Lodi is a community-based nonprofit dedicated to the planting, maintenance, and preservation of Lodi's urban forest through education, stewardship, and citizen involvement.

Explore Our Story
Rooted in Community, Growing for Tomorrow
We are arborists, educators, business owners, and neighbors united by a shared belief that a healthy urban canopy strengthens our community and our environment.

Plant

From Centennial Cork Oaks to the DeBenedetti Park Tree Laboratory, we've planted thousands of trees across Lodi's parks, schools, and neighborhoods — growing our canopy one tree at a time.

Educate

Through workshops, demonstrations, webinars, and partnerships with local schools and scouts, we teach the community proper planting, pruning, and care for a thriving urban forest.

Protect

We advocate at City Council for tree-friendly policy, work to combat threats like mistletoe infestation, and monitor the health of trees across Lodi's public spaces year-round.

Partner

Working alongside the City of Lodi, Lodi Electric Utility, CAL FIRE, and community volunteers, our Shade Tree Program has delivered over 2,000 free trees to Lodi residents.

Two Decades of Growing Lodi's Canopy
What began as one woman's determination to save Lodi's trees has grown into a lasting movement for urban forestry.
2003
A Voice for the Trees
Joyce Harmon begins speaking at Lodi City Council meetings about the mistletoe threatening the city's trees, earning the affectionate title "The Mistletoe Lady."
2005
Tree Lodi Founded
With the help of like-minded citizens, Joyce Harmon officially co-founds Tree Lodi, Inc. as a nonprofit to advocate for Lodi's urban forest. A strong partnership with City Parks begins under Steve Dutra.
2010
DeBenedetti Park Tree Lab
Tree Lodi's largest project: 213 trees of 26 species planted at Ed DeBenedetti Park, creating an outdoor tree laboratory with over 400 volunteers. Lodi marks 10 years as a Tree City USA.
2015
Heritage District Planting
With CAL FIRE grant funding, Tree Lodi partners with the City to bring trees to Lodi's underserved Heritage District, providing residents with watering kits and ongoing monitoring.
2017
Memorial Tree Program
Tree Lodi takes stewardship of the City's Memorial Tree Program, offering families the opportunity to honor loved ones with a living tree planted in a Lodi park.
2020
Shade Tree Program Launches
In partnership with the City and Lodi Electric Utility, the Shade Tree Program begins delivering free trees to residents — approximately 500 trees per year to reduce energy costs and expand the canopy.
2024
A Century Celebrated
Members past and present celebrate founder Joyce Harmon's 100th birthday by planting the Joyce Harmon Memorial Grove in Henry Glaves Park. Joyce passed away in November 2024, leaving behind a lasting legacy and 20+ years of urban forest growth.
The People Behind the Trees
Our all-volunteer leadership brings decades of expertise in arboriculture, public service, and community stewardship.
Steve Dutra
President

A lifelong outdoorsman shaped by scouting, Steve graduated from Delta College in Ornamental Horticulture and CSU Sacramento with a B.S. in Environmental Resources. Hired by the City of Lodi in 1980, he rose to Park Superintendent and has been instrumental in securing Lodi's Tree City USA designation every year. He planned and selected the trees for the DeBenedetti Park Tree Laboratory.

ISA Certified Arborist Pest Control Advisor CSU Sacramento
Bill Nantt
Vice President

A lifelong Lodi resident and Tokay High graduate, Bill built a career spanning retail nursery sales, landscape design, and tree maintenance. He retired from Caltrans as an Integrated Vegetation Management and Tree Program Manager, bringing extensive state-level forestry experience to Tree Lodi's leadership.

ISA Certified Arborist Pest Control Advisor CalPoly SLO
Nancy Mehlhaff
Secretary / Treasurer

Nancy brings 25 years of finance expertise from Lodi Memorial Hospital to Tree Lodi's operations. Daughter of founder Joyce Harmon, she joined the organization in 2005 and has grown deeply knowledgeable about urban forestry through years of hands-on work alongside certified arborists and dedicated volunteers.

Financial Administration Founding Family
Gordon Schmierer Sr.
Vice President Emeritus

A native Californian raised on an Acampo farm, Gordon's career took him from the University of Chicago to Reynolds Metals to a second career in real estate, where he witnessed firsthand how trees elevate neighborhood value. Returning to Lodi in 2009, he led the DeBenedetti Park Tree Laboratory project as Tree Lodi president.

UC Master Gardener Past President
Joyce Harmon
Founder & First President · 1924–2024

Born in Nova Scotia and educated at McGill University, Joyce moved to California in 1949. In 2003 she began her legendary one-woman campaign at City Council to combat mistletoe — and from that determination, Tree Lodi was born in 2005. Her century of life was celebrated in May 2024 with the planting of the Joyce Harmon Memorial Grove in Henry Glaves Park. Her vision continues to grow in every tree we plant.

In Memoriam Founder, Tree Lodi McGill University
National Awards & Designations
Lodi's commitment to its urban forest has earned sustained national recognition from the Arbor Day Foundation.

Tree City USA

 20+ Consecutive Years

Lodi has held the Arbor Day Foundation's Tree City USA designation for over two decades — a testament to sustained investment in urban forestry by the City, Tree Lodi, and the community.

Tree Board or Department
Tree Care Ordinance
$2/capita Annual Budget
Arbor Day Observance

Tree City USA Growth Award

 Going Above & Beyond

The Growth Award recognizes communities that exceed the baseline — documenting 10+ points of achievement across education, partnerships, planning, and tree planting each year.

 Education & Outreach  Partnerships  Planning & Management  Planting & Maintenance