RASLAINC.COM - Key Persons


Allan Summers

Job Titles:
  • Principal, RLA, ASLA, LEED a.P
Allan has a passion for horticulture and fine art and has been providing planning and design services through all phases of landscape architecture for over twenty-five years. He brings significant experience collaborating with other disciplines, running workshops, and working with public gardens and cultural institutions to design gardens of distinction. As a LEED accredited professional, he is sensitive to regional context and plant and materials selections to create ecologically based designs.

Andrew Calderone

Job Titles:
  • Landscape Architectural Designer
Andrew Joined the firm in 2016 after spending time in the engineering world. He holds a B.S. in Landscape Architecture from Philadelphia University. His responsibilities include leading our Graphics, Construction Documentation and Planning, and Project Management. Andrews recent work with the firm includes the Masterplan for Appleford Estate in Villanova, Ivy Club of Princeton University, and the Morris Arboretum and Gardens Rose Garden. He currently lives in Philadelphia, and spends his free time down the shore, exploring Fairmount park, or at his local coffee shop.

Annalisa Vapaa

Job Titles:
  • Landscape Architectural Designer

Geoff Anderson

Job Titles:
  • Principal RLA, ASLA, LEED a.P
Geoff has over thirty years of experience designing public and private gardens, historic landscapes, and urban spaces. He received his BS in Horticulture from North Carolina State University and Master of Landscape Architecture from the University of Pennsylvania. His most recent projects include a series of park renovations for the City of Wilmington and State of Delaware, healing gardens for several hospitals, and zoo exhibits across the country. He has worked on new campus projects for the University of Delaware and multiple social clubs at Princeton University. Geoff teaches Advanced Landscape Design through the Longwood Gardens Continuing Education program. He enjoys creating new gardens in and around his residence in Swarthmore.

Jeanine Snyder

Job Titles:
  • Business Manager
Jeanine performs all internal accounting and human resource functions for RAS. Jeanine is married with four sons. She loves traveling and country music.

Liz Krohn

Job Titles:
  • Landscape Designer
Liz received her BS in Biology and Environmental Science from St. Joseph's University before receiving her Master of Landscape Architecture from Temple University. Her experience includes working on residential planting plans, multi-family apartment courtyard construction documentation, and municipal parks and trails planning and design. When not working Liz can be found caring for her many houseplants, walking her dog Augie, crocheting with friends, or planning her next traveling adventure.

Rodney Robinson

Job Titles:
  • Fellow of the American Society of Landscape Architects
  • Founder, FASLA, LEED a.P., Emeritus
Rodney Robinson is a Fellow of the American Society of Landscape Architects and has been practicing landscape architecture for over thirty-five years. He is primarily recognized for his work in public and private gardens, which has taken him across the country. He has won several awards for his work and developments in the field of landscape architecture, and continues to develop the profession through education and community activism. Rodney retired from the firm in 2020. He stays involved in the design community through teaching and advocating for the profession.