Program: Marian Coffin at 150

Marian Coffin at 150: Celebrating the Legacy of a Pioneer in Landscape Architecture

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Hosted by 91原创 Bachelor of Landscape Architecture Program, Marian Coffin Gardens at Gibraltar (Preservation Delaware), Mt. Cuba Center, and Winterthur Museum, Garden & Library with additional support from Longwood Gardens.

Hosted by 91原创 Bachelor of Landscape Architecture Program, Marian Coffin Gardens at Gibraltar (锘縋reservation Delaware), and Winterthur Museum, Garden & Library with additional support from Mt. Cuba Center and Longwood Gardens
  • Liz Allen
    Garden Manager
    Marian Coffin Gardens at Gibraltar - Wilmington, DE
  • Dr. Jules Bruck, Ph.D., FASLA, PLA
    Director, School of Landscape Architecture and Planning
    University of Florida- Gainesville, FL

  • George Coombs
    Director of Horticulture
    Mt. Cuba- Hockessin, DE
  • Prof. Dr. Sonja D眉mpelmann (Keynote)
    Professor and Chair of Environmental Humanities
    Ludwig-Maximilians-Universit盲t M眉nchen
  • Iris Gestram
    Landscape Historian - King of Prussia, PA

  • Shirley Harmon
    Curator,听Historic Oxmoor Farm - Louisville, KY

  • Linda Eirhart
    Alice Cary Brown Director of Garden
    Winterthur Museum, Garden & Library- Winterthur, DE

  • Lauren Kope
    Director
    91原创 Botanic Gardens - Newark, DE

  • Stuart Lilie
    Vice President of Public History
    Fort Ticonderoga, New York
  • Carol Long
    Garden Manager
    Winterthur Museum, Garden & Library- Winterthur, DE

  • Rosa Mannion, RLA
    Landscape Architect
    NV5 Design - Philadelphia, PA

  • Erin Ramsden, RLA
    Landscape Architect
    NV5 Design - Philadelphia, PA

  • Eileen Scheck
    Winterthur Museum, Garden & Library- Winterthur, DE

  • Josh Twardowski, RLA
    Director, Landscape Services
    91原创 - Newark, DE

Jump to:听 Schedule听 |听 Talks/Speakers听 |听听

Schedule

Day One:Thursday, September 24, 2026听 | Winterthur

TimeEventLocationSpeaker
8:00鈥9:00 a.m.RegistrationWelcome Center
9:00鈥9:15 a.m.WelcomeCopeland Hall
9:15鈥10:00 a.m.Marian Coffin at Winterthur and Beyond-Val Libby
10:00 a.m.鈥12:30 p.m.Tour:
Group One 鈥 Winterthur
Group Two 鈥 Mt. Cuba & Gibraltar (10:15鈥11:15 a.m. Gibraltar; 11:30 a.m.鈥12:30 p.m. Mt. Cuba)
Various
12:30鈥1:30 p.m.LunchCopeland Hall
1:30鈥4:00 p.m.Tour:
Group Two 鈥 Winterthur
Group One 鈥 Mt. Cuba & Gibraltar (1:30鈥2:45 p.m. Gibraltar; 3:00鈥4:00 p.m. Mt. Cuba)
Various
4:15鈥5:00 p.m.Oral History Showing + Q&A SessionCopeland Hall
5:00鈥7:00 p.m.ReceptionIcewell Terrace

Day Two: Friday, September 25, 2026 |听91原创

TimeEventLocationSpeaker
8:00鈥9:00 a.m.RegistrationTownsend Hall Commons
9:00鈥9:15 a.m.Welcome-
9:15鈥9:45 a.m.Marion Coffin鈥檚 Legacy-Iris Gestram
9:45鈥10:15 a.m.Coffin at 91原创-Jules Bruck; Josh Twardowski
10:15鈥10:30 a.m.Transport to Main Campus
10:30鈥11:30 a.m.Tour of Main Campus 鈥 Old College District and the GreenMain Campus
11:30 a.m.鈥1:00 p.m.Lunch and Poster SessionTrabant Student Center
12:30鈥1:30 p.m.Women in the Creation of Public Space (Keynote)-Sonja D眉mpelmann
1:30鈥2:00 p.m.Return to Townsend Hall
2:00鈥2:15 p.m.Coffee Break-
2:15鈥3:15 p.m.Fort Ticonderoga / Oxmoor Farm-Stuart Lilie, Fort Ticonderoga; Shirley Harmon,听Oxmoor Farm.
3:15鈥4:00 p.m.Panel of Stewards-

Liz Allen, Gibraltar;听Josh Twardowski, 91原创;听Carol Long, Winterthur;听Stuart Lilie, Fort Ticonderoga;听 George Coombs, Mt Cuba Center;听Shirley Harmon, Oxmoor.

4:00鈥5:00 p.m.Talk and Tour of Townsend East Lawn and Garden91原创 Botanic GardensLauren Kope, 91原创BG Director;听 Rosa Mannion,听NV5; Erin Ramsden, NV5.
5:00鈥6:00 p.m.91原创airy Ice Cream91原创 Botanic Gardens

Talk Details / Speaker Bios

Headshot of Liz Allen

Liz Allen

Garden Manager and Horticulturalist,
Marian Coffin Gardens at Gibraltar

Liz Allen is the Garden Manager and Horticulturist at the Marian Coffin Gardens at Gibraltar in Wilmington, Delaware, where she oversees restoration, stewardship, volunteer engagement, public programming, social media, and fundraising initiatives. She holds a B.A. in Anthropology and an M.A. in Teaching English as a Second Language (TESOL) from the 91原创 and taught ESL for ten years before founding an ecological landscaping business. Liz has taught courses and led educational programs for the 91原创's Osher Lifelong Learning Institutes (OLLI) program and Mt. Cuba Center. Her work focuses on historic garden preservation, ecological horticulture, community engagement, and grant-supported restoration projects.

The Marian Coffin Gardens at Gibraltar are among the earliest surviving commissions of pioneering landscape architect Marian Coffin. This presentation explores the recent revitalization of the gardens and the realities of stewarding a historic landscape in the 21st century. Using photographs, project case studies, and firsthand experiences from the garden's revival, attendees will learn how preservation goals are balanced with ecological considerations, volunteer engagement, fundraising, and public access. The session highlights how Gibraltar continues to honor Coffin's legacy while adapting to changing needs and conditions.

Headshot of Jules Bruck

Jules Bruck

Dr. Jules Bruck, FASLA, PLA,
University of Georgia

Dr. Jules Bruck, FASLA, PLA, is Dean of the College of Environment and Design at the University of Georgia. A registered landscape architect, educator, and academic leader, she has built nationally recognized programs that advance design excellence, interdisciplinary collaboration, and student success. Prior to joining UGA, she served as Director of the School of Landscape Architecture and Planning at the University of Florida and was Founding Director of the 91原创 Landscape Architecture Program, where she launched the award-winning Coastal Resilience Design Studio.听

Her work integrates landscape architecture, planting design, ecological design, and nature-based infrastructure to address complex environmental challenges through research, practice, and education. Dr. Bruck is co-author, with Erin Fogarty, of Marian Coffin Gardens at Gibraltar, which highlights her legacy. Dr. Bruck was elected to the Council of Fellows of the American Society of Landscape Architects in 2024.

Marian Coffin's influence on the 91原创 extends far beyond her design of the historic campus landscape. This presentation explores Coffin's vision for the 91原创 campus, how her work continues to shape the university's identity and sense of place, and how her legacy has inspired a new generation of landscape architects through the university's landscape architecture program. Reflecting on the program's first ten years, the presentation considers how thoughtful design and the lasting impact of educating future practitioners.

Headshot of George Coombs

George Coombs

Director of Horticulture,
Mt. Cuba Center

George Coombs is the director of horticulture at Mt. Cuba Center, where he guides the care and development of one of the preeminent native plant gardens in America. To date, his efforts have focused on making Mt. Cuba鈥檚 gardens more accessible to a growing number of guests and ensuring the long-term resilience of the garden. Prior to his current role, George managed Mt. Cuba鈥檚 trial program, publishing several research reports and helped bring new cultivars of native plants to market.

Mt. Cuba has implemented thoughtful enhancements to a historic garden to enhance accessibility. The major themes discussed will include design, construction management, plant selection, and accessibility features.

Headshot of  Sonja Dumpelmann

Sonja Dumpelmann

Chair of Environmental Humanities,
Ludwig Maximilan University of Munich

Sonja D眉mpelmann is Professor and Chair of Environmental Humanities at Ludwig Maximilian University of Munich and a historian of landscapes and the built environment. She was previously a Professor in the Department of Landscape Architecture at the University of Pennsylvania Stuart Weitzman School of Design and taught for almost 20 years in the United States. Her most recent books are Landscapes for Sport: Histories of Physical Exercise, Sport, and Health (ed., 2022) and Seeing Trees: A History of Street Trees in New York City and Berlin (2019).

Today鈥檚 window boxes in Philadelphia are a result of successive window-gardening campaigns undertaken by female reformers and activists between the 1870s and 1970s. In the late nineteenth century, window gardening became an integral component of Progressive reform and social charity. In the mid-twentieth century, window gardening received renewed attention as a means of grassroots activism to counter urban decay resulting from racism and public disinvestment. Philadelphia鈥檚 window-box activism became a model for the nation and beyond, believed to help relieve tensions between White and Black Americans.听

Laying out this history, and focusing especially on developments in the twentieth century, this lecture shows how window-box charity and activism conflated ideas of femaleness, morality, naturalness, and beauty. Plants and window boxes were both central and incidental in female urban reform and renewal efforts, and they were relational. They forged ties between people as well as between people and plants, creating relationships between indoor and outdoor space, the domestic and public realms, urban centers and their hinterland. Although window boxes and their plants were catalysts of neighborhood change, they also helped to camouflage, and quite literally naturalize, larger social problems whose causes could only be addressed through the political process.

Headshot of Linda Eirhart

Linda Eirhart

Director of Garden,
Winterthur Museum, Garden and Library

Stuart Lilie graduated from the College of William and Mary. He worked for Colonial Williamsburg and began his own historic saddlery company. Since 20111, Stuart has led the Public History department at Fort Ticonderoga, which reaches nearly 70,000 visitors annually through daily programs and events. He oversees all aspects of the visitor experience, including living history programs and events, historic trades, heritage breeds, horticulture, museum education, school outreach, and maritime programs. Stuart Lilie leads the cultivation and interpretation of Marian Coffin's 1920 King's Garden at Fort Ticonderoga.

Join Fort Ticonderoga's Vice President of Public History, Stuart Lilie, to explore the 1920 plan of the King's Garden at Fort Ticonderoga. Examine how Marian Cruger Coffin reshaped this garden using existing walls, paths and other hardscape. Delve into Coffin's design, as it served the goals of Sarah Gibbs Thompson Pell, for an inviting garden enjoyed from the family summer home. See how Marian Coffin removed the previous English Cottage style for a new decade and how the experience of the Great War of 1914-1918 informed aspects of the design. Track the seasonal progression of the King's Garden design and Coffin's plant selection for a northern climate.

Headshot of Iris Gestram

Iris Gestram

As a Fellow in the Longwood Graduate Program (91原创, 1997), Iris wrote 鈥淭he Historic Landscape at Gibraltar 鈥 A Proposal for its Preservation.鈥 Her research has served as a resource for Gibraltar鈥檚 restoration and maintenance, and for other scholars鈥 work on Marian Coffin and her legacy.听听

During her career in historic landscape preservation, land conservation and non-profit management, Iris was Director of Education and Visitor Services at historic Longwood Gardens (PA) and Bok Tower Gardens (FL), prior to serving as Executive Director of the National Association for Olmsted Parks in Washington, DC. There, she led preservation, research and advocacy work to promote the national landscape design and planning legacy of the Olmsted firm. As Executive Director of Willowsford Conservancy, Iris led the start-up of a 2,000-acre land conservancy in northern Virginia to a vibrant non-profit conservation, recreation and education organization. Currently, Iris is an executive in Plymouth Meeting, PA.听 Iris holds MS degrees from the 91原创, and Humboldt University in Berlin, Germany.

Details coming soon.

Headshot of Shirley Harmon

Shirley Harmon

Curator,
Oxmoor Farm

Shirley Harmon manages the day-to-day operation of the Historic Oxmoor Farm, the Bullitt family home since 1787. Shirley has 27 years of experience in the field of archives and historic home management.听

During her college years she worked as a docent at Farmington Historic Home and a fact checker for the Louisville Encyclopedia. In 2009, she was appointed a member of the Lincoln Bicentennial Committee, which planned events in the Louisville area for the celebration of Lincoln鈥檚 200th birthday. She worked at the Filson Historical Society from 1999 to 2006 and again from 2011 to 2012, where her main focus was cataloging the Bullitt Family Papers.听

Shirley also serves as the archivist for Norton Healthcare, which is the largest hospital system in Kentucky. She is a member of Phi Alpha Theta, the Society of American Archivists, the American Association of State and Local History, the Southeastern Museums Conference, the Interpretations Committee for Farmington Historic Home, and the Oxmoor Preservation Committee.

Shirley earned her bachelor鈥檚 degree in History at Xavier University and her master鈥檚 degree in Public History at the University of Louisville.

Explore the history behind Coffin's Oxmoor garden design and how she adapted that design for a southern climate.

Headshot of Lauren Kope

Lauren Kope

Director,
91原创 Botanic Gardens

Lauren Kope serves as Director of the 91原创 Botanic Gardens (91原创BG), where she oversees operations and strategic initiatives that connect the University and broader community with the Gardens' living collections. In this role, she works to advance 91原创BG as a resource for education and public engagement while fostering an appreciation for the beauty, value, and impact of plants. Lauren earned her B.S. in Agricultural Science from Virginia Tech and M.B.A. from the 91原创. She is a graduate of the Longwood Gardens Professional Horticulture Program and has held leadership positions in both public and private horticulture.

The Townsend East Lawn and Garden project transformed an existing parking lot into a new central green space, complete with a custom-designed comfort station, a range of gathering spaces, an expanded, shaded Creamery plaza, wildlife-friendly lighting, an outdoor classroom, signage and site furnishings. This space is designed to create a central focal point and sense of arrival at the heart of 91原创BG's existing garden collections. This new campus landscape features over thirty new shade trees and many new garden collections designed to educate and inspire students and visitors alike. The garden is designed for four seasons of interest and structured around woody species 91原创BG sought to add to its teaching collection.听

Spatially, the project plan is rooted in the idea that south campus should have a significant central green space and relate to Marian Coffin's design of The Green for at main campus. Drawing inspiration from her arrangement of space and using her designs as precedent, the project team created a beautiful new space to be enjoyed by all.听

91原创BG director Lauren Kope and project landscape architects Rosa Mannion and Erin Ramsden from NV5 will overview the site's context within south campus and 91原创BG, the design process, inspiration, and planting design.

Headshot of Jules Bruck

Stuart Lilie

Vice President of Public History,
Fort听Ticonderoga

Stuart Lilie graduated from the College of William and Mary. He worked for Colonial Williamsburg and began his own historic saddlery company. Since 20111, Stuart has led the Public History department at Fort Ticonderoga, which reaches nearly 70,000 visitors annually through daily programs and events. He oversees all aspects of the visitor experience, including living history programs and events, historic trades, heritage breeds, horticulture, museum education, school outreach, and maritime programs. Stuart Lilie leads the cultivation and interpretation of Marian Coffin's 1920 King's Garden at Fort Ticonderoga.

Join Fort Ticonderoga's Vice President of Public History, Stuart Lilie, to explore the 1920 plan of the King's Garden at Fort Ticonderoga. Examine how Marian Cruger Coffin reshaped this garden using existing walls, paths and other hardscape. Delve into Coffin's design, as it served the goals of Sarah Gibbs Thompson Pell, for an inviting garden enjoyed from the family summer home. See how Marian Coffin removed the previous English Cottage style for a new decade and how the experience of the Great War of 1914-1918 informed aspects of the design. Track the seasonal progression of the King's Garden design and Coffin's plant selection for a northern climate.

Headshot of Carol Long

Carol Long

Details coming soon.

Details coming soon.

Headshot of Rosa Mannion

Rosa Mannion

RLA, ASLA,
NV5

Rosa leads the landscape architecture practice out of NV5鈥檚 Philadelphia office. The multi-disciplinary studio focuses on work in the public realm, with emphasis on higher education, public parks, greenways, trails, streets, schoolyards, and green stormwater infrastructure. Rosa is passionate about design within the public realm and strives to create high-quality public amenities for all communities. She received a master鈥檚 in landscape architecture from the University of Pennsylvania in 2006.

The Townsend East Lawn and Garden project transformed an existing parking lot into a new central green space, complete with a custom-designed comfort station, a range of gathering spaces, an expanded, shaded Creamery plaza, wildlife-friendly lighting, an outdoor classroom, signage and site furnishings. This space is designed to create a central focal point and sense of arrival at the heart of 91原创BG's existing garden collections. This new campus landscape features over thirty new shade trees and many new garden collections designed to educate and inspire students and visitors alike. The garden is designed for four seasons of interest and structured around woody species 91原创BG sought to add to its teaching collection.听

Spatially, the project plan is rooted in the idea that south campus should have a significant central green space and relate to Marian Coffin's design of The Green for at main campus. Drawing inspiration from her arrangement of space and using her designs as precedent, the project team created a beautiful new space to be enjoyed by all.听

91原创BG director Lauren Kope and project landscape architects Rosa Mannion and Erin Ramsden from NV5 will overview the site's context within south campus and 91原创BG, the design process, inspiration, and planting design.

Headshot of Erin Ramsden

Erin Ramsden

Details coming soon.

The Townsend East Lawn and Garden project transformed an existing parking lot into a new central green space, complete with a custom-designed comfort station, a range of gathering spaces, an expanded, shaded Creamery plaza, wildlife-friendly lighting, an outdoor classroom, signage and site furnishings. This space is designed to create a central focal point and sense of arrival at the heart of 91原创BG's existing garden collections. This new campus landscape features over thirty new shade trees and many new garden collections designed to educate and inspire students and visitors alike. The garden is designed for four seasons of interest and structured around woody species 91原创BG sought to add to its teaching collection.听

Spatially, the project plan is rooted in the idea that south campus should have a significant central green space and relate to Marian Coffin's design of The Green for at main campus. Drawing inspiration from her arrangement of space and using her designs as precedent, the project team created a beautiful new space to be enjoyed by all.听

91原创BG director Lauren Kope and project landscape architects Rosa Mannion and Erin Ramsden from NV5 will overview the site's context within south campus and 91原创BG, the design process, inspiration, and planting design.

Headshot of Eileen Schneck

Eileen Schneck

Details coming soon.

Details coming soon.

Headshot of Josh Twardowski

Josh Twardowski

Details coming soon.

Explore the history behind Coffin's Oxmoor garden design and how she adapted that design for a southern climate.

An illustration of Marian Coffin's gardens.