Aggressive, Noxious and Invasive Weeds
Aggressive, invasive, or noxious weeds; these are terms that are often used interchangeably. Knowing the difference may help reduce your workload and improve the environment.
Weed usually refers to a plant out of place. This could be a dandelion in the lawn or a columbine that seeded into the middle of a liatris.
Aggressive plants are bullies that crowd out their timid neighbors. They’ll take over the entire garden bed if left unchecked.
Invasive plants do the same, but also leave the garden and invade our natural eco-systems. They crowd out native plants that birds, insects and wildlife depend upon. Don’t purchase and consider removing invasive plants from your landscape.
Noxious weeds are plants that have been identified as harmful to people, animals, crops, livestock and the environment and should be removed.
As you may have guessed, some plants fit in all three categories.
A bit more information: You may have discovered some plants considered invasive in some regions may not be classified as invasive in yours. Always check with your local extension service or Invasive Plant Atlas of the United States before purchasing new plants.
Related
Categories
Upcoming Live Events
& Webinars
March 19, 2025
FREE WEBINAR:
Be a Waterwise Gardener
Register here
March 22, 23, 29, 30, 2025
REALTORS Home & Garden Show
West Allis, WI
March 26, 2025
FREE WEBINAR:
Succession Planting & Crop Rotation
Register here
March 27, 2025
FREE WEBINAR:
Rain Garden Q & A
Register here
April 2, 2025
FREE WEBINAR:
Container Gardens for Sun & Shade
Register here
April 10, 2025
FREE WEBINAR:
Reinvigorate Your Rain Garden
Register here
April 12, 2025
Plant a Colorful & Edible Spring Garden
Pasquesi Home & Gardens
Lake Bluff, IL
April 26, 2025
Organic Gardening Basics
Ebert's Greenhouse Village
Ixonia, WI
May 7, 2025
FREE WEBINAR:
Vertical Gardening
Register here
May 10, 2025
Ask the Plant Doctor Q&A
Ebert's Greenhouse Village
Ixonia, WI
May 11, 2025
Ask the Plant Doctor Q&A
Ebert's Greenhouse Village
Ixonia, WI
May 15, 2025
FREE WEBINAR:
7 Steps to Managing Water on Your Property
Register here
May 17, 2025
Ask the Plant Doctor Q&A
Ebert's Greenhouse Village
Ixonia, WI
May 18, 2025
Ask the Plant Doctor Q&A
Ebert's Greenhouse Village
Ixonia, WI
June 4, 2025
FREE WEBINAR:
Attracting Hummingbirds
Register here
June 8, 2025
Selecting the Right Hydrangea
for Your Landscape
Ebert's Greenhouse Village
Ixonia, WI
WATCH ON-DEMAND WEBINARS
Learn More