Course Overview

One of the key challenges for landscape practitioners is dealing with invasive species. When discussing solutions with clients, the use of herbicides can be an elephant in the garden room. In Part One of this series, we'll examine and debate the ecological and practical ramifications of both chemical and organic approaches. In Part Two, project case studies will demonstrate specific planting and management techniques for each. Regardless of the path you choose, this program will enhance your ability to "referee" plant populations in your projects more effectively.

Date & Time
Part One: Thursday, Dec. 21, 2023 | 1 - 4:30 PM ET  
Part Two: Friday, Dec. 22, 2023 | 1 - 4:30 PM ET
The sessions will be recorded and viewable to registrants for 3 months after each live session date.

Location: Virtual

Fee: $155 for Bundle (Parts One & Two), or $88 per individual session

Student discount: Email verification of student status (ie. course schedule including your name and enrollment date) to [email protected] for 20% off discount code.

Audience: Professional

CEUs: APLD (6), LA CES (6)
(6 class hours)
CEU Summary Sheet
Please stay tuned for CEU updates.

Register by: 3 months after the Part One live session date

For Bundle registrants, registration will be refunded only if notification is received before five (5) working days prior to the Part 1 live session date.

For individual sessions, registration will be refunded only if notification is received before five (5) working days prior to the live event date.


Brian O'Neill has been licensed and treating wetlands and aquatics sites for well over 35 years. Upon graduation in 1973, Brian first job was with Weeds, Inc. and he is now President. Weeds, Inc. specializes in weed control, both contact and herbicide sales. They work throughout the Mid-Atlantic and Midwestern states. Brian is a licensed applicator and a consultant in multiple states. Over the past 25 years, Weeds, Inc. has been planting native warm season/cool season grass and wildflower mixes on various projects throughout the Mid-Atlantic states.  Weeds, Inc. has coordinated with many corporate clients to help get their facilities Leed Certified by way of installing low maintenance flora. Brian O’Neill has a BSBA degree from American University in Washington D.C. 

Paul Tukey is an award-winning journalist, author, filmmaker, HGTV host, consultant and motivational public speaker who is internationally recognized as a pioneering leader in sustainable landscaping. Now serving as the Director of Environmental Stewardship for the Glenstone Museum in Potomac., Md., Paul is helping to create a “living classroom” on the all-organic 300-acre site that includes native meadows, a five-acre organic lawn, restored streams and tributaries, forests and more than 13,000 newly planted native trees.

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 sessions in order to access the recordings.

  • 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 ~5 minutes prior to the start time. The instructors will use slide presentations. *If you have any technical difficulties during the session and need to contact us, please email Sara Weaner Cooper, NDAL Executive Director, at [email protected] instead of calling.*

  • Continuing Education Units (CEUs): Which CEUs are approved for this course?

    We are seeking approval for CEUs by the following organizations: APLD, LA CES, & NOFA.

  • Continuing Education Units (CEUs): Can I get CEUs for taking this course?

    Those seeking LA CES live course CEUs must watch the session and complete the quiz on the Portal by *two weeks* after the live session dates. Those seeking LA CES on-demand course CEUs must complete the quiz by the 3 month expiration dates. Ensure that your Portal profile indicates ASLA/LACES under the CEU section and email [email protected] if you make any changes to your profile CEU section. You will then receive an email with your completion certificate within 3-4 weeks of the quiz due dates. || For APLD & NOFA CEUs, please self-report to those organizations using your registration confirmation email.


Register by 3 months after the Part One live session date.

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