Fatoua villosa, Mulberryweed

Gardens & Landscapes, Invasive Species November 10, 2012 Print Friendly and PDF

Invasive Species: Fatoua villosa, Mulberryweed

Mulberryweed is an invasive annual that can grow to 2.6 ft. (0.8 m) tall. Stems are branched, erect, and have hooked hairs. Leaves are alternate, stipulate (deciduous), petiolate, 1 to 3.9 in. (2.5 to 10 cm) long, and 0.4 to 2.8 in. (1-7 cm) wide with toothed (pointed or rounded) margins. Flowering occurs in the summer and fall. Flowers are light green, unisexual, apetalous, and occur in axillary cymes. Fruit is a one-seeded achene less than 1/10 in. (0.8 mm) long. Mulberryweed is native to east Asia and occurs in wetlands and other moist, shaded areas. It is problematic in greenhouses and nurseries. The first known population in the United States was in Louisiana in 1964.

What are invasive species and why should we be concerned about them? 


Taxonomy: Scientific and Common Names for This Species

Urticales > Moraceae > Fatoua villosa (Thunb.) Nakai

Synonym(s): hairy crabweed

Fatoua villosa - USDA PLANTS Profile

Distribution Maps

Mulberryweed - The reported distribution of this invasive species across the United States (Source: Invasive Plant Atlas of the United States)

Up-to-the-minute distribution maps and why they are important 

Reporting This Invasive Species

What is the best way and place to report the occurrence of an invasive species? 

 How to report an invasive species sighting to EDDMapS - Early Detection & Distribution Mapping System

EDDMapS - Report an invasive species to EDDMapS.

Cooperative Extension Offices - Find your local Cooperative Extension office on this map provided by USDA.

How to Identify

This invasive species can be identified by looking for the characteristics described in the paragraphs that follow.

Plant

Mulberryweed is an annual that can grow to 2.6 ft. (0.8 m) tall. Stems are branched, erect, and have hooked hairs.

Mark Czarnota, University of Georgia, bugwood.org Mark Czarnota, University of Georgia,  bugwood.org

Foliage

Leaves are alternate, stipulate (deciduous), petiolate, 1 to 3.9 in. (2.5 to 10 cm) long, and 0.4 to 2.8 in. (1 to 7 cm) wide with toothed (pointed or rounded) margins.

Rebekah D. Wallace, University of Georgia, bugwood.org Rebekah D. Wallace, University of Georgia,  bugwood.org

Flower

Flowers are light green, unisexual, apetalous, and occur in axillary cymes.

Mark Czarnota, University of Georgia,  bugwood.org Rebekah D. Wallace, University of Georgia,  bugwood.org

Fruit

Fruit is a one-seeded achene that is less than 1/10 in. (0.8 mm) long.

Mark Czarnota, University of Georgia,   bugwood.org Nancy Loewenstein, Auburn University, bugwood.org

Native Species That Can Resemble Mulberryweed

- Images at invasive.org

   
bugwood.org bugwood.org

- Images at invasive.org

   
bugwood.org bugwood.org

Additional Images for Mulberryweed

Mulberryweed - Images at Invasive.org

Learning Resources for Mulberryweed

Additional Information, Biology, Control and Management Resources

Control and management recommendations vary according to individual circumstances. Location, habitat, weather, and a variety of other conditions are factors that help determine the best treatment choice. To find the safest and most effective treatment for your situation, consult your state's land-grant institution. If you will use chemicals as part of the control process, always refer to the product label.

United States Land-Grant University System - Find your land-grant university's college of agriculture, Cooperative Extension office, or other related partner on this map provided by USDA.

Mulberry Weed: Identification and Control - University of Georgia

Fatoua villosa - Missouriplants.com

Flora of North America - eFloras.org

Weed IT - NC State University

Robert W. Freckmann Herbarium - University of Wisconsin - Stevens Point


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This work is supported by the USDA National Institute of Food and Agriculture, New Technologies for Ag Extension project.