Meet the ISA Certified Arborists at Tree Shepherds

Tree Shepherds Team of ISA Certified Arborist

The ISA Certified Arborists at Tree Shepherds provide expert tree care backed by professional training, industry standards, and extensive experience caring for North Texas trees. Serving Flower Mound and surrounding communities, our arborists help homeowners and property managers make informed decisions about tree health, pruning, preservation, and risk management.

Scott Geer

Founder & Owner, ISA Board Certified Master Arborist®

Clayton Geer

Owner, ISA Certified Arborist®

Ethan Geer

Owner, ISA Certified Arborist®

Stan Williams

Sales, ISA Certified Arborist®

John Pinney

Sales, ISA Certified Arborist®

John Imperial

PHC Manager, ISA Certified Arborist®

Avraam Semerikov

Crew Leader, ISA Certified Arborist®

Joseph Sansoucie

Crew Leader, ISA Certified Arborist®

Jaylee Calabrese

ISA Certified Arborist®

Verify an ISA Credential: ISA Find an Arborist

Why ISA Credentials Matter

The ISA (International Society of Arboriculture) recognizes qualified, competent, and safe tree care professionals who are sought out the by the public, government organizations, and other professions.

Certification involves three years of practical experience in the field (or two years with university level study in a related field), as well as an exam covering:

Tree Biology
Urban Forestry
Tree Identification and Selection
Soil Management
Installation and Establishment
Pruning
Diagnosis and Treatment
Trees and Construction
Tree Risk
Safe Work Practices

If you have anybody working on your trees, the company you choose should at least have one ISA Certified Arborist® on staff. It demonstrates a level of commitment and shows that they care.

Tree Shepherds encourages the pursuit of ISA credentials for all our in-field employees.