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MUGWORT
 Mugwort
[Artemisia vulgaris L.]
DESCRIPTION
Mugwort is a perennial weed with very distinctive alternate and dissected leaves. The upper leaf surface is bright green and smooth, while the lower leaf surface is light green in color and very hairy. The leaves resemble common chrysanthemums, and also emit an odor when crushed. Mugwort is commonly found in waste areas, flower beds and lawns. Its strong and persistent rhizomes mean that cultural and chemical control can be difficult.
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Characteristic |
Description |
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Growth Season |
perennial weed |
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Growth Habit |
prostrate, spreading; stems round in cross section and hairy |
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Leaflet Number |
one |
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Leaf Margin |
deeply lobed, upper leaf surface dark green, underside of leaf white to gray |
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Leaf Hairs |
dense hairs on upper surface, smooth to slightly hairy bottom surface |
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Leaf/Leaflet Shape |
elliptical |
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Leaf Width |
1 inch to greater than 2 inches |
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Leaf Venation |
pinnate |
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Leaf Arrangement |
alternate |
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Root Type |
fibrous |
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Flower Color |
inconspicuous |
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mugwort rhizome and roots |
mugwort leaf, venation |
Note: Still not sure this is the right weed? The Turf & Weed Identification Decision Aid may help. Check the TurfFiles glossary for definitions of unfamiliar terms.
CULTURAL CONTROL
Perennial broadleaf turf weeds are capable of living more than two years. They thrive in weak, thin turf; golf fairways and roughs; home lawns; playfields; and industrial grounds. Proper turf maintenance is the key to control of this weed. First, select adapted turfgrass cultivars for your area and then properly fertilize, mow, and water to encourage dense growth.
CHEMICAL CONTROL
Mugwort is extremely difficult to control. There are no selective postemergence broadleaf herbicides that will control this weed effectively.
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Postemergence herbicides: |
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Herbicide |
Tolerant Turfs (1) |
Average Efficacy Rating(2) |
Range of Trial Efficacy Values, % |
Number of Trials |
Products (3) |
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dicamba |
ba, be, bk, f, r, z |
G |
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0 |
Banvel, Clarity, Vanquish |
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glyphosate |
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G |
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0 |
Glyphosate Original, Roundup, Touchdown Pro** |
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2,4-D |
be, bk, f, r, z |
F |
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0 |
2,4-D amine, Solution Water Soluble |
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Footnotes: |
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(1) |
Turfgrass Codes: |
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ba |
bahiagrass |
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bc |
bentgrass, creeping |
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be |
bermudagrass |
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bk |
bluegrass, Kentucky |
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c |
centipedegrass |
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f |
fescue, tall |
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r |
ryegrass, perennial |
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sa |
St. Augustinegrass |
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z |
zoysiagrass |
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blank |
No turfgrass in the database is completely tolerant. Check label to see if chemical can be used at a reduced rate or during the dormant season on your turfgrass. |
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(2) |
Efficacy Ratings: |
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E |
excellent control (90 to 100%) |
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G |
good control (80 to 90%) |
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F |
fair control (70 to 80%) |
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Efficacy ratings are based on herbicide trials performed by weed scientists at North Carolina State University between 1997 and 2007. The number of trials included in the efficacy ratings is displayed in the next-to-last column. The higher this number, the more confidence can be placed in the efficacy values. Trials may have involved sequential applications of one or more chemical. Details of individual trials (herbicide rates, dates of application, environmental conditions at time of application, etc) can be viewed on the TurfFiles web site, through the Turf Weed Management Decision Aid.
Efficacy ratings for chemicals lacking trial data are from “Pest Management Strategic Plan for Turfgrass in the Southern United States,” summary of a workshop for turf experts from multiple universities held in Griffin, GA in October, 2004 and sponsored by the Southern Region Integrated Pest Management Center. |
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(3) |
Recommendations of specific chemicals are based upon information on the manufacturer's label and performance in a limited number of trials. Because environmental conditions and methods of application may vary widely, performance of the chemical will not always conform to the safety and pest control standards indicated by experimental data. The order in which brand names are given is not an indication of a recommendation or criticism. |
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Recommendations for the use of agricultural chemicals are included in this publication as a convenience to the reader. The use of brand names and any mention or listing of commercial products or services does not imply endorsement by North Carolina State University or discrimination against similar products or services not mentioned. Other brand names may be labeled for use on turfgrasses. Individuals who use agricultural chemicals are responsible for ensuring that the intended use complies with current regulations and conforms to the product label. Be sure to obtain current information about usage regulations and examine a current product label before applying any chemical. For assistance, contact your county's Cooperative Extension agent. |
© North Carolina State University. This information sheet was prepared by Fred Yelverton, Bridget R. Lassiter, Gail G. Wilkerson, Leon Warren, Travis Gannon, Jenifer J. Reynolds, and Gregory S. Buol. Department of Crop Science, College of Agriculture & Life Sciences, North Carolina State University. Prepared July 15, 2008. Available on-line at www.turffiles.ncsu.edu. This publication was made possible through a grant provided by the Center for Turfgrass Environmental Research & Education (CENTERE) whose purpose is to support worthwhile projects that will benefit both the private sector and the public, and protect the environment.
KEYWORDS FOUND IN THIS ARTICLE:
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