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Lawn, Tree & Shrub Questions? Ask a RYAN Pro!

At Ryan Lawn & Tree, we want to help you create and maintain beautiful lawns that will be the envy of all your neighbors. Use these free resources to learn more what it takes to keep your turf, trees, and plants healthy and looking great.

Our RYAN Pros

Dr. Rodney St. John

Vice President of Technology

Mark Stuhlsatz

Vice President of Regional Operations

Matt Evans

Master Arborist

Ask a RYAN Pro

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.



Have a Question? Ask a RYAN Pro!

Do you have a pressing question about your lawn, trees, or landscape? Fill out this form and have a RYAN Pro answer your question.

Ask a RYAN Pro!

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RYAN Pro Videos

Learn more about important tree & lawn topics by watching the videos featuring our RYAN pros.

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