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 About Us

Leslie and Holly

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Leslie and Holly specialize in plant problem diagnosis and enjoy teaching both landscape professionals and homeowners how to properly care for their trees and shrubs. As Certified Arborists, we continue to keep up-to-date on current information, standards, and practices in the field of arboriculture to provide the highest quality of tree care.

Leslie Lyles holds a Bachelor of Science degree in Plant Science from UNR with a specialty in Integrated Pest Management, and a Master of Science degree in Environmental Horticulture from UC Davis specializing in Plant Problem Diagnosis. Leslie has been working in the field of Horticulture since 1987 and became a Certified Arborist in 1990. Leslie has taught classes in horticulture and tree care through the University of Nevada Cooperative Extension and the Truckee Meadows Community College.  She has also been a guest lecturer for numerous industry conferences and helps teach green industry training and recertification classes. Leslie served on the Board of Directors of the Nevada Landscape Association (NLA) from 2012-2018 and was the editor of their magazine for over 8 years. The NLA awarded Leslie with a Lifetime Achievement Award in 2023 for her over 30 years of dedication to teaching the green industry.

Holly Bromley received a Bachelor of Science degree in Biology from UNR with an emphasis in ecology. Holly has been working professionally in the field of horticulture since 1996 and became a Certified Arborist in 2000. Holly has taught numerous industry training classes for the University of Nevada Cooperative Extension and the Nevada Landscape Association.  She was also a contributing writer for the Nevada Landscape Association magazine for many years. 


Our Story

Not just arborists, sisters

Stewardship Horticultural is a family owned and operated business in Reno, NV.  We have been taking care of trees and landscapes for over 30 years in Northern Nevada.  Our family has called Northern Nevada our home for 55 years.  Leslie is a wife and a  mom to two daughters. Holly is a wife, mom, and nana to four children and 6 grandkids. We both love to spend time in the great outdoors, and with our family and friends. Family is our priority, and we love working with clients who become like family.

Community Involvement

Our outreach into the community

Both Leslie and Holly have been involved in their community for many years.  Leslie is a past chair of the Reno Urban Forestry Commission and past president of the Nevada Shade Tree Council.  She also served on the board of the Nevada Landscape Association for eight years, and helped edit and write articles for the magazine for over ten years. Both Leslie and Holly volunteer their time to teach for Cooperative Extension's Master Gardeners program, recertification programs, and do Green Industry Training.  Holly is involved in Rotary club and making a difference in her community.  


Our Mission

Stewardship of the urban forest is our legacy to future generations.

The health and beauty of a landscape depends on proper design, plant selection, placement, planting and pruning. Our mission is to help property owners and managers achieve the healthiest, most attractive landscapes.

Get in Touch


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