Friends of Nachusa Grasslands
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Invasive Plants Managed at Nachusa Grasslands

Non-native, invasive plants have been intentionally or accidentally introduced by humans into areas outside of their natural habitats. These aliens can spread rapidly, displacing or destroying native species.

The Nachusa Grasslands staff and stewards manage about 30 different invasive plants. Based on their area responsibilities, they often prioritize controlling certain species over others. The following are a few of the plants that our staff and stewards deal with throughout the year.

Amur Honeysuckle
  • Scientific Name: Lonicera maackii
  • Origin: Asia
  • Ecological Threat: Amur honeysuckle infests many savannas and woodlands and is difficult to eradicate. Its large thickets prevent native shrubs and plants from thriving. Birds eat the berries and distribute them widely, where they easily germinate.
  • Management Methods: Applying herbicide to each shrub’s basal bark or cut stems. Fire top kills honeysuckle but does not kill the root.
 
Autumn and Russian Olive
  • Scientific Names: Autumn (Elaeagnus umbellata); Russian (Elaeagnus angustifolia)
  • Origin: Japan
  • Ecological Threat: Autumn olive can form dense, shady, shrub clusters, closing open areas and suppressing the growth of native plants that require sunny conditions to survive.
  • Management Methods: Applying herbicide to each shrub’s basal bark or cut stems. Fire top kills autumn olive but does not kill the root.  

Birdsfoot Trefoil
  • Scientific Name: Lotus corniculatus
  • Origin: Europe, Asia, and North Africa
  • Ecological Threat: Dense colonies can exclude native species. Plants produce abundant seeds which stay in the soil bank for years.
  • Management Methods: Spot or boom spraying herbicide; clipping and disposing of seed heads.

Common Buckthorn
  • Scientific Name: Rhamnus cathartica
  • Origin: Europe
  • Ecological Threat: Shrubs can form thickets that out-compete native plants for nutrients, light, and moisture.
  • Management Methods: Applying herbicide to each shrub’s basal bark or cut stems.

Multiflora Rose
  • Scientific Name: Rosa multiflora​
  • Origin: Asia
  • Ecological Threat: Thorny, bushy shrubs smother native vegetation.
  • Management Methods: Applying herbicide to each shrub’s basal bark or cut stems.

Queen Anne's Lace
  • Scientific Name: Daucus carota
  • Origin: Europe and Southwest Asia
  • Ecological Threat: Each Queen Anne’s lace plant produces thousands of seeds, so they can spread quickly, especially in disturbed areas, crowding out native species.
  • Management Methods: Digging, using special spades to cut the root underground; clipping and disposing of seed heads.
Red Clover
  • Scientific Name: Trifolium pratense
  • Origin: Europe, Western Asia, and Northwest Africa
  • Ecological Threat: Red clover may spread and displace desirable vegetation if not properly managed.
  • Management Methods: Spading, spot spraying, or applying herbicide to cut stems; clipping and disposing of seed heads.

Reed Canary Grass
  • Scientific Name: Phalaris arundinacea
  • Origin: Europe and Asia
  • Ecological Threat: Reed canary grass forms large monocultures and crowds out native species, building up a tremendous seed bank that germinates year after year.
  • Management Methods: Applying herbicide; clipping and disposing of seed heads.

Wild Parsnip
  • Scientific Name: Sativa pastinaca
  • Origin: Europe and Asia
  • Ecological Threat: Infestations can spread and form dense stands, crowding out native vegetation.
  • Management Methods: Applying herbicide before plants bolts; spading and hauling out flowering plants, being careful to avoid sap on skin, which can cause blisters

Yellow and White Sweet Clover
  • Scientific Names: Yellow (Melilotus officinalis); White (Melilotus alba)
  • Origin: Europe
  • Ecological Threat: Sweet clovers degrade open grasslands by crowding and shading native plants, thereby reducing species diversity.
  • Management Methods: Spading, mowing, spraying patches, or applying herbicide to cut stems; clipping and disposing of seed heads.

For more information on invasives at Nachusa Grasslands, see the Managing Invasive Plants, Herbicide Use, and Invasive Identification web pages.

UPDATED 03/2020

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  • Home
  • About Friends
    • Mission, Leadership, Objectives, and Financials
    • Endowments
    • Heritage Heroes Initiative
    • Friends Annual Reports
    • Newsletters >
      • PrairiE–Update (email)
      • A Prairie Calling (print and digital)
    • Friends Annual Meeting 2022
    • Commenting Policy
  • Plan Your Visit
    • Hours & Parking
    • Directions and Map
    • Visitor Center
    • Pet Policy
    • Public Bison Tours
    • Bison Viewing
    • Hiking >
      • Hiking Guidelines
      • Hiking Destinations
      • Stone Barn Savanna Tour
      • Visitor Center Trail
      • Scavenger Hunt
    • What's In Bloom?
    • Autumn on the Prairie
    • Exploring Nachusa Grasslands on Your Own
    • Things to Do
    • Places to Eat and Stay
    • Local Sites to Visit and Explore
  • Donate
  • Calendar
  • Volunteer
    • Volunteer Opportunities
    • Thursday and Saturday Workdays >
      • Workday Signup
      • Volunteer Workday Safety Protocols
      • Workdays – November to February
      • Leader Workday Safety Protocols
      • Steward Workday Tips
    • Stewardship Teams
    • Workday Email List
    • Steward Login
  • Stewardship
    • Nachusa Stewardship
    • Restorations
    • Planting Histories >
      • Stewardship Unit Planting Histories
      • Planting Histories in Chronological Order
      • Science Symposium Abstracts 2016
    • Stewards and Staff
    • Groups and Committees
    • Available Units
    • Controlled Burns
    • Prescribed Fire Recruitment
    • Restoration Publications
    • Stewardship Resources >
      • Weekly Top Picks
      • Seed Collection Guides
      • Invasive Plant Management
      • Invasive Identification
      • Monitoring
      • Links & Resources
  • Science
    • Science at Nachusa Grasslands
    • Science Grants >
      • Science Grants 2023
      • Science Grants 2022
      • Science Grants 2021
      • Science Grants 2020
      • Science Grants 2019
      • Science Grants 2018
      • Science Grants 2017
      • Science Grants 2016
      • Science Grants 2015
      • Science Grants 2014
      • Science Grants 2013/2012/2011
    • Science Symposium 2023
    • Science Symposium Abstracts >
      • Science Symposium Abstracts 2019
      • Science Symposium Abstracts 2018
      • Science Symposium Abstracts 2017
    • Potential Research Topics
    • Scientific Publications
    • Testimonials >
      • Dr. Holly Jones
      • Dr. Nick Barber
      • Kimberly Elsenbroek
    • Science Videos
    • Become a Community Scientist >
      • About Community Scientists
      • Butterfly Monitoring
      • Calling Frog Monitoring
      • Dragonflies & Damselflies
      • RiverWatch
  • About Nachusa
    • General Info
    • Prairie Smoke Annual Reports
    • Plant Inventory >
      • Common Names
      • Genus Species
    • Animal Inventory >
      • Amphibians
      • Birds
      • Bison Bison >
        • Bison
        • Bison Babies Broadcast Videos
      • Fish
      • Insects
      • Mammals
      • Other Arthropods
      • Reptiles
    • History
    • Jobs
    • Hunting
    • Geology >
      • Geology Part 1
      • Geology Part 2
      • Geology Part 3
    • 30th Anniversary Memories
    • Websites of Interest
  • BLOG AND MEDIA
    • Nachusa Blog
    • In The News
    • Photo Gallery >
      • Spring Photos
      • Summer Photos
      • Autumn Photos
      • Winter Photos
      • Visitor Photos
    • Submit Your Photos
    • Videos
  • Contact Us / FAQs