Photo by Mark Weaner

Presenters: Bill Allis & Jane Allis (Panel with Bill, Jane, & Ethan Dropkin)

Part 1: Case Study Presentation
This case study describes the conception, planning, design, procurement, installation and management of a native plant landscape and sculpture park through the eyes of the founders. A whirlwind three years began the transformation of the 36-acre residential property with large native plant gardens, an enhanced natural meadow and savanna matrix, a series of six small constructed wetland pools, and forest habitat all organically maintained with limited staff. The Bower opened in 2021 and continues to grow, evolve, and demonstrate the rewards of combining ecology and art.    

Part 2: Panel
In this session, landscape designer Ethan Dropkin will join the Allis’s in an informal discussion on the processes, challenges, and results of their collaboration at The Bower. Attendee participation and questions will be encouraged.

Date & Time: Thursday, March 23, 2023, 2:00 - 3:30 PM EST
-The session will be recorded and viewable to registrants for 3 months after the live session date.

Location: Virtual

Fee: $42
-Students please email verification of student status to for discount code.
-Both free Student Scholarships have been awarded for this session. Applications no longer accepted.

Event Category: Professional & Non-Professional

CEUs: APLD (1.5), LA CES (1.5), & NOFA (1.5)
See here for details & instructions

Register by: 3 months after the live session date



Registration is open and recording is viewable for 3 months after the live session date. Students please email verification of student status to for discount code.


Bill Allis, PE, retired as an Environmental Engineer, for Gannett Fleming, an international consulting firm, in 2018. As a project manager and business leader, he designed large municipal civil infrastructure. Beyond his current role as The Bower’s Co-Founder/Manager, Bill is 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. Beyond her current role as The Bower’s Co-Founder/Manager Jane is engaged as a property holder in a public/private pilot conservation project, the Catoctin Stewardship Initiative, in Maryland; 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, the patterns and processes they express in nature, and their effective use in the designed landscape. He has been involved with numerous private gardens and public projects including Riverwalk Park in Tarrytown, NY, and a planting plan for Kingsland Wildflowers in Brooklyn, NY. 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. 


  • Recording: Will this course be recorded for me to view later? Do I have to attend the live session in order to access the recording?

    The entire course will be recorded and available (not downloadable) to all registrants after the live session ends for three (3) months. If you are registered, you do not need to attend the live session in order to access the recording.

  • Recording: Can I purchase only the recording later?

    You can register for 3 months past the live session date, and access the materials - including the recording - until that point.

  • Webinar Platform: Which webinar platform will the live session be held on?

    Zoom Webinar. Please make sure to download the Zoom application ( and download the latest Zoom update if needed prior to the live course. We recommend that you join at least 5-10 minutes prior to the start time. The instructor will use PowerPoint presentations. *If you have any technical difficulties during the session and need to contact us, please email Sara Weaner, NDAL Executive Director, at instead of calling.*

  • Continuing Education Units (CEUs): How do I receive the CEUs?

    As this is considered a live course, those seeking LA CES CEUs must watch the session and complete the quiz on the Portal by *two weeks* after the live session date. Ensure that your Portal profile indicates ASLA/LACES under the CEU section and email if you make any changes to your profile CEU section. You will then receive an email with your completion certificate within 3-4 weeks. || For APLD & NOFA CEUs, please self-report to those organizations using your registration confirmation email. If you need a completion certificate and are not seeking LA CES CEUs, please write "need certificate" in your Portal profile CEU section and email letting us know you updated it.