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Dr. Rodney St. John
VP of Agronomy and Environmental Stewardship
Mark Stuhlsatz
Vice President of Innovation
Matt Evans
Master Arborist
Dr. Rodney St. John is no ordinary doctor; he holds a Ph.D. in Horticulture, plus more than 20 years experience in the lawn and garden industry. As Ryan Lawn & Tree’s resident agronomist, Dr. Rodney leads our training and education efforts. He loves to help people grow grass and teach them how to properly care for their lawns!
Mark Stuhlsatz has a Bachelor Degree in Horticulture and Landscape Design and more than 20 years of industry experience. He serves as a Vice President and enjoys problem solving and troubleshooting aspects of irrigation and landscaping challenges.
Matt Evans holds a Bachelor Degree in Horticulture and many accolades in the forestry field. He is an ISA Board Certified Master Arborist and has over 20 years of industry experience. Matt uses his extensive tree knowledge to educate and help clients solve tree related issues.
