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Professional Tree Services in San Bernardino
Mowbray Tree Service has been a family-owned and operated business since 1972, dedicated to providing safe, efficient, and environmentally responsible vegetation management solutions. With over 50 years of experience, we serve electric utilities, gas companies, railroads, municipalities, and the Department of Transportation across diverse terrains from mountains to deserts. Our team combines traditional arborist skills with cutting-edge mechanized equipment to minimize employee exposure to hazards while maximizing productivity. We hold certifications including ISA Arborist credentials and Tree Risk Assessment Qualified (TRAQ) designations, ensuring compliance with federal, state, and industry-specific safety standards.

Our commitment to innovation is demonstrated through our mechanized division established in 2020, featuring specialized equipment from leading manufacturers. We maintain a robust safety program aligned with OSHA, ANSI, and TCIA requirements, supported by on-site safety observation teams during all operations. Our environmental department focuses on best management practices for green waste disposal, including air curtain incineration technology that reduces particulate emissions. As a WMBE-certified business, we prioritize community engagement and sustainable practices in every project we undertake.
Services
Hazard Tree Mitigation Integrated Vegetation Management Mechanized Tree Removal Emergency Tree Response Crane Services Green Waste Management Environmental Services
Details
  • Year established: 1972
Highlights and features
  • Over 50 years of experience in vegetation management since 1972
  • ISA-certified arborists and TRAQ-qualified professionals on staff
  • Largest fleet of 75-foot aerial lift trucks on the West Coast
  • 24/7 emergency response available for disaster situations
  • Environmentally responsible green waste management solutions
Associations and certifications
  • ISA (International Society of Arboriculture)
  • TRAQ (Tree Risk Assessment Qualified)
  • WMBE (Women and Minority Business Enterprise)
What people say
Highly trained team Professional and respectful Heroic performance Left the job site clean Exceptional service
Services
Hazard Tree Mitigation
Our certified arborists specialize in removing dangerous trees through proper pruning techniques. We address dead, damaged, or insect-infested trees near power lines, using specialized equipment and safety protocols. This service prevents potential hazards while maintaining compliance with utility regulations.
Integrated Vegetation Management
We implement customized vegetation control plans that balance environmental needs with infrastructure safety. Our approach combines herbicide application, mechanical clearing, and routine trimming to maintain compliance while preserving ecological balance across utility rights-of-way.
Mechanized Tree Removal
Our modern fleet featuring Altec and Vermeer equipment safely removes trees in challenging locations. This mechanized approach reduces worker exposure to hazards while maintaining precision in difficult terrain, including urban environments and remote wilderness areas.
Emergency Tree Response
We provide rapid response for tree-related emergencies caused by hurricanes, earthquakes, or severe storms. Our trained crews handle urgent hazard mitigation, debris removal, and infrastructure restoration with specialized equipment available 24/7 for disaster recovery operations.
Crane Services
Our Demag crane fleet handles high-risk tree work in both forested and urban settings. Certified operators use cranes for transformer relocation, utility pole installation, and hazardous tree removal, providing safer alternatives to traditional climbing methods when necessary.
People
Modesto Aguilar
Fleet Welder
With 6 years at Mowbray's, Modesto appreciates the company's growth and supportive team environment. He contributes to maintaining our industry-leading equipment while benefiting from ongoing professional development opportunities.
Questions
What is Utility Line Clearance?
Line-clearance tree trimming involves pruning or removing trees within 10 feet of energized power lines to ensure safety and regulatory compliance.
Which utility companies does Mowbray's work with?
We partner with Southern California Edison, Pacific Gas and Electric, Sacramento Municipal Utility District, and Bear Valley Electric Service for vegetation management needs.
Is Mowbray's an experienced company?
Yes, we've provided tree services since 1972 with operations across diverse US environments from mountains to deserts and urban to remote areas.
Do you only work with utility companies?
While we specialize in utility vegetation management, we also offer professional tree services to municipalities and private clients upon request.
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