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How to Keep Invasive Plants Out of Your Wisconsin Yard

Serving the Greater Madison, WI area and Dane County

A wild garlic mustard plant - Alliaria petiolata

Have you ever noticed certain plants taking over your yard, suffocating the beauty and vitality of your landscape? These aggressive invaders, known as invasive plants, can quickly become a nuisance, jeopardizing the health and balance of your outdoor space. But fear not! In this article, we’ll define what invasive plants are and share effective strategies for managing these plants. We will also provide detailed descriptions of notorious invaders: Japanese knotweed, oriental bittersweet, and garlic mustard – including poison ivy – an outright itchy nuisance.

What is an Invasive Plant?

Invasive plants are species that come from outside and quickly take over an ecosystem, pushing out the native plants by grabbing resources like sunlight, water, and nutrients. They’re really good at reproducing fast and adapting to different environments, which makes them tough opponents. These invaders mess up natural ecosystems, lower biodiversity, and create long-lasting ecological problems.

Managing Nuisance Plants in Wisconsin 

Invasive plants are persistent, and getting rid of them requires a strategic and proactive approach. Here are some effective strategies for managing and controlling their spread:

  • Early Detection and Monitoring: Regularly inspect your landscape for invasive plants. Act quickly if you notice any potential threats, as early intervention is crucial in preventing their establishment and proliferation.
  • Proper Removal Techniques: When removing invasive plants, remember to use proper techniques to minimize the risk of spreading seeds or fragments. Wear protective clothing, including gloves and long sleeves, and dispose of plant material in sealed bags or containers.
  • Targeted Herbicide Application: Sometimes, using herbicides that target specific plants is needed to control invasive plants effectively. To figure out which herbicide and application method are best for your situation, it’s a good idea to seek advice from a professional arborist or horticulturist.

Descriptions of invasive and nuisance Plants:

Poison ivy in a wooded area of Wisconsin.   

Poison Ivy (Toxicodendron radicans): Poison ivy is a native vine or shrub with three shiny leaflets that can cause severe allergic reactions in many people. Its leaves turn red in autumn, and the plant may produce white berries.

Japanese Knotweed (Fallopia japonica): Japanese knotweed is a perennial plant with bamboo-like stems and heart-shaped leaves. It forms dense thickets and can grow up to 10 feet tall. In late summer, it produces clusters of small, creamy white flowers. 

Japanese knotweed in a Wisconsin yard.
Oriental Bittersweet, a nuisance plant in Wisconsin, categorized by its bright fruit and leaves.

Oriental Bittersweet (Celastrus orbiculatus): Oriental bittersweet is a climbing vine that can strangle and shade out other plants. It has glossy, oval leaves and produces yellow capsules that contain bright red berries. 

Garlic Mustard (Alliaria petiolata): Garlic mustard is a biennial herb with toothed, heart-shaped leaves that emit a garlic-like odor when crushed. In spring, it produces clusters of small white flowers. 

Garlic Mustard, with small white flowers, is an invasive plant in Wisconsin.


Invasive and bothersome plants can mess up the beauty and balance of your outdoor area, but you can regain control with the right know-how and proactive actions. By spotting invasive plants early, using good management techniques, and getting help from professionals when necessary, you can bring back the health and liveliness to your landscape.

Get Professional Invasive Plant Control

Remember, if you need expert assistance in dealing with invasive and nuisance plants, don’t hesitate to reach out to us. Our team of skilled arborists and horticulturists is ready to help you reclaim your outdoor space and restore its natural beauty.

Take the first step towards a thriving landscape! Contact us now to schedule a consultation today.

How to Keep Invasive Plants Out of Your Wisconsin Yard in the Greater Madison, WI area

Serving Dane County

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