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Mugwort

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.

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

Herbicide and Formulation
Amount of Formulation per 1,000 sq ft
Amount of Formulation per Acre
Pounds Active Ingredient per Acre

Preemergence and Postemergence Control

Herbicide and Formulation

mesotrione, MOA 27 (Tenacity) 4 SC

Amount of Formulation per 1,000 sq ft

0.092 to 0.183 fl oz

Amount of Formulation per Acre

4 to 8 fl oz

Pounds Active Ingredient per Acre

0.125 to 0.25

Precaution and Remarks

Use on residential turf, golf courses (not greens) and sod farms for pre- and postemergence weed control. Tolerant turfgrasses include St. Augustinegrass, centipedegrass, tall fescue, fine fescue, Kentucky bluegrass, and perennial ryegrass. Add a nonionic surfactant and repeat application after 2 to 3 weeks for improved postemergence control. Tank mix with Barricade 65 WG for extended preemergence grassy weed control. Can be applied at seeding to all tolerant grasses except fine fescue. After turf germination, wait 4 weeks or until turf has been mowed twice before making a postemergence application. Also controls henbit, chickweed, dandelion, white clover, Florida betony, Florida pusley, ground ivy, oxalis, wild violet, creeping bentgrass, and yellow nutsedge.

Preemergence and Postemergence Control

Herbicide and Formulation

sulfentrazone + prodiamine, MOA 14 + 3 (Echelon 4 SC) 4 SC

Amount of Formulation per 1,000 sq ft

0.184 to 0.826 fl oz

Amount of Formulation per Acre

0.5 to 2.25 pt

Pounds Active Ingredient per Acre

0.25 to 1.125

Precaution and Remarks

For use in residential and institutional lawns, athletic fields, sod farms, golf course fairways and roughs, roadsides, utility right-of-ways, railways, and industrial areas. Apply to turf following a second mowing if a good root system has been established. Apply up to 12 fluid ounces per acre to bentgrass at 0.5 inches or higher, fine fescue, and perennial ryegrass. Apply 18 to 24 fluid ounces per acre to perennial bluegrass, tall fescue, and all warm season grasses except St. Augustinegrass (do not apply) and bermudagrass (apply 18 to 36 fluid ounces per acre). For sod production, apply 6 months after establishment, and do not harvest within 3 months. Do not apply with adjuvants or surfactants. Echelon should not be applied to cool-season turf with N-containing fertilizers unless some short-term discoloration is tolerable.

Presentations

Publications

Species Data

Growth Season/Life Cycle

perennial weed

Growth Habit

prostrate, spreading; stems round in cross section and hairy

leafarrangement
leafarrangement
leafarrangement
p1000841
p1000841
p1000841
p1000842
p1000842
p1000842
Leaflet Number

one

Leaf Margin

deeply lobed, upper leaf surface dark green, underside of leaf white to gray

frontandback2
frontandback2
frontandback2
leaf
leaf
leaf
Leaf Hairs

dense hairs on upper surface, smooth to slightly hairy bottom surface

frontandback2
frontandback2
frontandback2
Leaf/Leaflet Shape

elliptical

frontandback2
frontandback2
frontandback2
leaf
leaf
leaf
weed
weed
weed
Leaf Width

1 inch to greater than 2 inches

frontandback2
frontandback2
frontandback2
leaf
leaf
leaf
Leaf Venation

pinnate

frontandback2
frontandback2
frontandback2
leaf
leaf
leaf
weed
weed
weed
Leaf Arrangement

alternate

leafarrangement
leafarrangement
leafarrangement
weed
weed
weed
Root Type

fibrous

autopsy
autopsy
autopsy
leafarrangement
leafarrangement
leafarrangement
rhizome2
rhizome2
rhizome2
roots
roots
roots
Flower Color

inconspicuous