Gordon Mann

Gordon Mann

Gordon is a consulting arborist in Auburn CA, and co-owner of California Tree and Landscape Consulting, Inc (CalTLC), owner of Mann Made Resources a tree conservation products company, co-founder of TREES ROI a tree root certification product company, and the Soils Genomics Institute for Healthy Community Trees. He received a Bachelors of Science degree in Forest Science from the University of Illinois. He has over 45 years of experience managing trees where people live from the municipal, non-profit, and private tree care perspectives. He is a current Director on the California Urban Forests Council, and a recent Trustee on the TREE Fund Board. He is an ISA Certified Arborist exam proctor and Certified Tree Climber assessor for the Western Chapter ISA. He serves on the ANSI A300 committee reviewing and writing industry standards as the Alternate representative (and past Representative) for SMA/UCFS. He is passionate about helping others grow quality trees where people live, educating people on proper tree care, and enjoys talking about trees with people. 

Gordon is a past International Society of Arboriculture (ISA) Board Director, past president of: the American Society of Consulting Arborists (ASCA), Western Chapter ISA, San Mateo Arboretum Society, and California Arborists Association, and City Talk Toastmasters. He is a past board member of the Urban and Community Forestry Society (UCFS, previously SMA), and a past member and chair of the California Urban Forest Advisory Council. He is past chair of the International Tree Climbing Competition (3 years) and Northern California Tree Climbing Competition (13 years). His focus is on growing trees in a sustainable manner to maturity and receiving the benefits and return on investment trees provide people. He is active in professional associations.

The CalTLC consulting company is appreciated for the expert advice provided to tree owners, tree care companies, attorneys, and developers.

Canopy matters. Gordon served as the Urban Forest Services Director leading the Greenprint Initiative at the Sacramento Tree Foundation to double the tree canopy in the populated areas of the 6 county and 22 city Sacramento region. He is now encouraging the California Urban Forests Council to create a California Greenprint that focuses on the canopy and setting canopy goals throughout the state to guide community tree management.

Awards, Certifications, and Professional Memberships:

Received 2016 Award of Merit from the WCISA

Received 2015 SMA Legacy Project of the Year, 2102 Award of Achievement and 2011 Author’s Citation from the Society of Municipal Arborists

Received 2011 True Professional of Arboriculture award from International Society of Arboriculture

Member American Society of Consulting Arborists (ASCA), Registered Consulting Arborist #480

Member International Society of Arboriculture (ISA), ISA Certified Arborist and Municipal Specialist #WE-0151 AM; ISA TRAQ Qualified Tree Risk Assessor

Member Western Chapter ISA and Student and Municipal Committees member (and past chairs)

Member California Urban Forest Council (CaUFC), Certified Urban Forester #127 (soon to be a Society of American Foresters (SAF) certification)

Professional outreach:

Developed and led training programs with the California Arborists Association Provided urban forestry and municipal arboriculture instruction in Sydney and Melbourne, Australia Presented urban forestry related sessions at regional and annual meetings with ASCA, ISA, SMA, ISA Chapters, CAA, PAPA, TCIA, CAPCA, Sacramento Tree Foundation, APWA, Arbor Day Foundation, Maintenance Superintendents Association, Oregon Department of Forestry, San Mateo County Stormwater Pollution Prevention Program, CO Pro-Green Expo, Idaho Hort Expo, and BC CanWest Hort Show, MO Community Forestry Council, Authored articles in newsletters and magazines including: Western Arborist, Arborist News, City Trees, Tree Care Industry Association, and Utility Arborists Association Presented sessions on urban tree management and tree industry topics at: 2012 Colorado Pro-Green Conference; 2012 Idaho Hort Expo; 2012 Association of Environmental Professionals; 2012&2013 WCISA Regional Meetings, 2013 BCRPA annual conference, ANSI A300 workshops 2012, 2013; WCISA regional meetings 2014 and annual conference 2012, 2013, 2014, 2015, 2023; SHADE Phoenix conference 2014; Maintenance Superintendents Association conference 2014; CAPCA 2013; PAPA 2012, 2013, 2014, 2015, 2021, 2022, 2023; WAA/DNR Annual Conference 2015; Swedish ISA Chapter Umea, 2015; SMA 2015; Landscape Alberta 2015; Professional Tree Care Association San Diego, 2017, 2018; WCISA Regional Meetings; 2019 Partners in Community Forests; 2020, 2021 Virtual, 2022, 2023 PNW ISA Chapter annual conference; 2020, 2023 ISA annual conference; 2021 Missouri Urban Forest Coalition; 2021 APWA Missouri; 2022 New York Arborists Assn; 2022 Wisconsin Arborists Association; 2023 WFUF Washington DC

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