Qualifications

Horticultural Associates is a full-service consulting firm, dedicated to the fields of horticulture and arboriculture. We specialize in assessing and managing trees and provide a full range of horticultural consulting services focused on problem-solving in the commercial landscape and urban forest. We are degreed horticulturalists and certified arborists.


Our clients, located throughout the West Coast, include municipalities, design firms, developers, attorneys, insurance companies, and plant professionals.


Our background and experience are highly unique. Practical experience in commercial growing and propagating, as well as technical expertise in the areas of horticulture and arboriculture, provide us with the knowledge and insight required to evaluate health issues and produce pragmatic management solutions for plant growth issues.


Expertise in species selection and in-depth knowledge of the various environmental conditions which affect plant growth are the foundations for planting success. Our experience combines these to provide design recommendations, management options, and problem solutions.


  • Certified Arborist, WCISA #0478
    Certified by the Western Chapter of the International Society of Arboriculture

  • International Society of Arboriculture
    Long-term member of tree industry organization

  • American Society of Consulting Arborists
    Accepted for membership based on education and experience

  • State Licensed Landscape Contractor, #401782
    Licensed in the State of California in category C-27, Landscape Contracting

  • State Licensed Pest Control Advisor, #1038 (categories A,B,C)
    1977-2001 Licensed in the State of California to provide written pest control recommendations, with over 250 hours of continuing education

  • California State Polytechnic University, BS Environmental (Ornamental) Horticulture with honors, 1977
    A solid foundation in education, followed by over 30 years of
    practical field experience

  • University of California, Berkeley, Adjunct Faculty
    Instructor in the Landscape Architecture Department teaching classes in Landscape Horticulture and Field Identification of Landscape Plants
    to future designers

  • American Society of Consulting Arborists
    Arboriculture Consulting Academy, Providence Rhode Island, 1999

  • Irrigation System Evaluation Short Course
    California Department of Water Resources and California Polytechnic
    State University

  • University of California Coopertaive Extension (UCCE)
    Instructor for Landscape Management short course

  • California State Certified Small Business
    State Certified Small Business (SB) #59484