Presenters: Piet Oudolf & Larry Weaner

Herbaceous perennials can do much more than simply add color. Thoughtfully orchestrated herbaceous compositions can define the experiential character of an entire landscape. In this session Larry and Piet will compare and contrast their respective approaches to site analysis, plant selection and arrangement, and management considerations through a commingled series of presentations and informal conversations. They will provide a behind the scenes, granular look at how they weave the creative with the practical to create mood-evoking yet viable perennial compositions.   

Date & Time: Wednesday, July 27, 2022, 9:30 AM - 11:45 AM ET* 

Location: Virtual

Fee: $58

Event Category: Professional & Non-Professional

CEUs: APLD (2), ASLA/LACES (2.25), NOFA (2) 
See here for CEU instructions.

Register by: 3 months after the live session date

*The session will be recorded and viewable to registrants for 3 months after the live session date.



Registration is open and recording is viewable for 3 months after the live session date.


Piet Oudolf has revolutionized the way perennial gardens are designed and viewed in landscapes today. Since 1982, he has lived and worked in Hummelo, in east Netherlands, where he started a perennial nursery with his wife Anja. Some of Piet’s most influential works in the U.S. include the perennial plantings at Battery Park, The Highline perennial plantings, and Goldman Sachs headquarters. Piet has written a number of books including Hummelo: A Journey Through a Plantsman’s Life (2015, written with Noel Kingsbury), and won numerous awards including the Association of Professional Landscape Designers 2010 Award of Distinction.

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.


  • 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 ASLA/LACES 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.