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Presenters: Bill Allis, Jane Allis, Ethan Dropkin, & Larry Weaner

“You want to do good stuff on multiple levels.” That quote by Bill Allis, co-founder with his wife Jane of The Bower, describes their vision perfectly. The quote’s simplicity does not describe, however, the level of planning, artistry, and craftsmanship that allowed this multifaceted, 36-acre, organic public garden to jell. 

Philadelphia gallerist and art consultant Bridgette Mayer was enlisted to guide a Call to Art from 130 international applicants. Landscape Architects Oehme, Van Sweden (OvS) created a master plan, and Larry Weaner Landscape Associates (LWLA) designed various native plantings, and advised on stewardship of the wild areas. Bill and Jane served as project managers and guideding force. On our tour, instructors will describe how each area was designed, planted, and managed; how each space fits spatially and programmatically with the larger landscape; and how design, art, and ecology can even more creatively interact going forward.       

Date & Time: Thursday, July 14th, 2022, 9 AM - 4:30 PM ET* 

Location: 1190 Bower Rd, Shermans Dale, PA 17090

Fee: $235

Event Category: Professional

CEUs: APLD (3), ASLA/LACES (6), ISA (Certified Arborist: 6; Practice: 4; Management: 2; Municipal Specialist: 6), NOFA (4)
See here for CEU instructions.

*Time listed above includes instructional time & breaks. There will be 6 session hours.
Light breakfast, lunch, and refreshments are included in the registration fee.
Check-in & breakfast begin at 8:30 AM ET.

This session will be held entirely outdoors, limited attendance.



Bill Allis, PE, completed a lengthy career as an Environmental and Water Resources Engineer for international consulting firm Gannett Fleming in 2018. His career specialty was project and program management, design and construction management of large municipal drinking water infrastructure. Bill is currently co-leading development of The Bower and engaged in landscape scale conservation and enhancement as board member and Stewardship Committee Chair of the Central Pennsylvania Conservancy.

Jane Allis, M.Ed, completed a 40-year career as an early childhood educator and administrator in 2016. Career highlights included education program development and serving as Project Manager for the land acquisition, consultant selection, and design-build of The Londonderry School, one of the first LEED accredited school designs in Pennsylvania. Jane is currently co-leading development of The Bower, and serves as Chapter President of the Wild Ones of South-Central Pennsylvania.

Ethan Dropkin, MLA, landscape designer at Larry Weaner Landscape Associates (LWLA), has an extensive and in-depth understanding of native plants and their effective use in the designed landscape. He has been involved with numerous private gardens and public projects. Prior to joining LWLA, Ethan worked as a designer at Michael Van Valkenburgh Associates, as a horticultural designer and technician for Cornell University, and as a horticulturist for the New York City Parks Department.

Larry Weaner, FAPLD, founded Larry Weaner Landscape Associates in 1982 and established NDAL in 1990. He is nationally recognized for combining expertise in horticulture, landscape design, and ecological restoration. His design and restoration work spans more than twenty U.S. states and the U.K., and has been profiled in numerous national publications. His book Garden Revolution: How Our Landscapes Can Be a Source of Environmental Change (2016) received an American Horticultural Society Book Award in 2017, and in 2021 he received American Horticultural Society’s Landscape Design Award.