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Environmental Horticulture

Environmental Horticulture

Dr. Laurie E. Trenholm

Professor / Environmental Horticulture

Dr. Laurie E. Trenholm works the with commercial lawn care industry on problems relating to lawn grass cultural management, stress physiology, and Best Management Practices. Dr. Trenholm oversees the BMP Educational Program statewide.


    Dr. Trenholm led the Florida Department of Environmental Protection turfgrass nutrient leaching research project. The research was conducted in 3 locations statewide from 2004-2012 and monitored nitrate leaching under a variety of conditions. Results of this project verified the recommendations in the Best Management Practices and resulted in revisions to some of the current fertilization recommendations. The research conclusively determined that healthy, actively growing turfgrass will assimilate virtually all of the nitrogen applied in fertilizer applications.  


    Urban Turfgrass, Turfgrass Cultural Practices, Best Management Practices, Turfgrass Nutrient Management

     Extension program focuses on best management practices for lawns and landscapes for conservation and sustainability of Florida’s water resources. Works primarily with lawn care and pest control operators on proper turfgrass management, with particular emphasis on nutrient management and stress tolerance. Dr. Trenholm was the original IFAS faculty member  to work with the Florida Department of Environmental Protection on developing the Green Industries Best Management Practices education program. This required by state statute for all professionals applying fertilizer to urban turf. Dr. Trenholm works extensively with horticulture extension agents throughout the state on turf issues and cultural practices. 

Laurie Trenholm profile

Environmental Horticulture
University of Florida
PO Box 110675
Gainesville FL 32611-0675

    • Ph.D. 1999 University of Georgia, Crop Science/Turfgrass Physiology
    • M.S. 1996 University of Florida Environmental Horticulture/Turfgrass Science
    • B.S. 1994 University of Florida, Environmental Horticulture/Turfgrass Science