Getting into the Weeds: Design, Planting, and Maintenance of Glenstone’s Ecological Landscape - 1.5 PDH (LA CES/HSW) / 1.0 GBCI SITES-Specific CE

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    • Non-member - $60
    • Member - $50
    • Student Member - Free!
    • Associate Member - $40

This session addresses the design process that began at Glenstone in 2003 and evolved into an ongoing collaboration between people and living systems. The panel will describe how landscape architects, native plant consultants, and an organic-oriented in-house team achieved the ecologically diverse and vibrant landscape that continues to evolve today.

The GBCI course ID for this course is 920026644, providing SITES-specific CE hours required to maintain SITES AP credentials. Participants will need to pass the exam at the end of the presentation in order to receive a certificate of completion. Participants will need to self-report CE hours through their credentials account on

Learning objectives:

  • Demonstrate what can be achieved because of collaboration between consultants and owners with diverse specialties.
  • Understand how design intent may change and be realized over a long period of time.
  • Gain insight into conceiving living systems and change as part of a landscape design focused on both performance and aesthetics.
  • Understand the difficulties and successes of an organic maintenance regime and how that relates to ideas of sustainability and "low maintenance."

Adam Greenspan, ASLA


PWP Landscape Architecture

Adam Greenspan has been the lead designer on a wide range of projects including public parks, campuses, mixed use developments, competitions and estates. Adam’s background in art and sociology, combined with years of horticultural practice support an integrated approach to design and allow him to develop projects from many angles. Adam has collaborated extensively with architects, artists, community groups and owner groups, as well as sub-consultant experts, in the process of realizing exceptional built work. Adam’s recent projects include: the Newport Beach Civic Center Park, Constitution Gardens on the National Mall, Salesforce Transit Center Park and Glenstone Museum.

Larry Weaner, Affil. ASLA

Ecology-Based Landscape Designer

Larry Weaner Landscape Associates

Since founding Larry Weaner Landscape Associates in 1982, Larry Weaner has been widely recognized as a leader in the field of ecology-based landscape practice. He also founded New Directions in the American Landscape in 1990, a conference series dedicated to incorporating ecological science and cultural landscape practice into the art of landscape design. He has lectured widely throughout the US and his book, "Garden Revolution: How Our Landscapes Can Be a Source of Environmental Change" won and American Horticulture Society Book Award. AHS also awarded him their annual "Landscape Design Award" in 2021.

Matthew Partain

Landscape Superintendent

Glenstone Foundation

Matthew Partain is the landscape superintendent at Glenstone, a contemporary art museum in Potomac, MD, near Washington, DC. He oversees a team of grounds specialists who maintain nearly 300 acres, with a focus on organic and developing native landsacapes. Previous work experiences include Berea College, KY, The Greenbrier, WV, The Biltmore Company, NC and Walt Disney World, FL.


Video: Getting into the Weeds
Open to view video.
Open to view video.
10 Questions  |  Unlimited attempts  |  8/10 points to pass
10 Questions  |  Unlimited attempts  |  8/10 points to pass Successful completion of this quiz is required to earn your PDH for this webinar.
8 Questions
Certificate - LA CES PDH
1.50 PDH credits  |  Certificate available
1.50 PDH credits  |  Certificate available
Certificate - GBCI SITES-Specific CE
1.00 GBCI SITES-Specific CE credit  |  Certificate available
1.00 GBCI SITES-Specific CE credit  |  Certificate available
Session Guide
Open to download resource.
Open to download resource.