Darrell Garrison, PLA, ASLA, CPSI, NOMA

President/Director of Landscape Architecture


Darrell is President/CEO of Planning Resources Inc. (PRI) and continues to guide the growth of the firm through his “Hands-On” project involvement and business development. Darrell also serves as Director of the Landscape Architecture studio, where he oversees design excellence, project quality control and document coordination. His efforts ensure that PRI’s projects are socially, environmentally, and economically sustainable. Darrell is also responsible for business operations, staffing and business development. Darrell’s passion and tireless work ethic has shaped the office culture of PRI.

Darrell is a licensed landscape architect with 30 years of experience working with municipal and public agencies such as park districts, school districts, villages, cities, counties as well as federal agencies. He brings an extensive knowledge of landscape architecture and an in-depth understanding of public spaces and how people manipulate them. Darrell has experienced professional success in the development of parks and recreation spaces, downtown streetscapes, public plazas, educational institutions, commercial developments and sustainable site master planning.


Bachelor of Landscape Architecture
Ball State University – Muncie, Indiana

Bachelor of Environmental Design
Ball State University – Muncie, Indiana

Professional Affiliations

Illinois Chapter – American Society of Landscape Architects (ILASLA), Member and Past President
American Society of Landscape Architects (ASLA), Member
Illinois Landscape Architect Registration Board, Former Member and Past Board Chairman
National Organization for Minority Architects (NOMA), Affiliate Member
Blacks in Green (BIG), Member
Professional Landscape Architect (PLA), State of Illinois
Certified Playground Safety Inspector (CPSI)

Passion for the Profession

Darrell is most inspired by the process; seeing a project through from beginning to end and experiencing that journey alongside the client.

Outside Interests

Darrell’s primary hobby is strength/weight training.  Darrell believes fitness training is not only a healthy lifestyle that should be adopted by all, but it reassures one’s personal connection in the mind, body and spirit. His personal commitment to a healthy fit lifestyle has shaped PRI’s approach to planning and design.

Additionally, he loves his role as “G-Dad” to his two grandchildren.  He is happiest when engaging the boundless curiosity of both of them.  True happiness is laughing with the two of them about something entirely nonsensical!