Mustard, garlic (Alliaria petiolata)

Remarks A biennial plant, garlic mustard forms a basal rosette of leaves the first season and sends up a flower stalk producing hundreds of seeds in the second season. It begins spring growth at low temperatures, earlier than many other plants. Preventing seed production from mature bolted plants should be the primary focus of control measures. Hand-pulling plants is an effective control method and should be used to as a follow-up to chemical methods whenever possible. After working in an area where this plant is growing, boots, clothing, equipment, and vehicles should be cleaned to avoid transporting seeds.

glyphosate

Rate 2.0% solution of 3 lb ae/gal product, with 1.0% by volume nonionic surfactant

Time Apply in spring prior to flowering or in late fall.

Remarks To control seedlings and rosettes, a 1.0 to 2.0% solution is adequate; the higher rate should be used on plants that have bolted. Glyphosate will not control garlic mustard plants that are well into or beyond flowering stage; these plants will have time to develop mature seed before the herbicide stops their growth.

Site of action Group 9: inhibits EPSP synthase

Chemical family None generally accepted

triclopyr (Garlon 3A, Vastlan and others)

Rate 1.0 to 2.0% solution of 3 lb/gal product or 1.5% solution of 4 lb/gal product, with 1.0% by volume nonionic surfactant or crop oil concentrate

Time Apply spring or fall.

Remarks Triclopyr is more effective than glyphosate on already-flowering plants.

Site of action Group 4: synthetic auxin

Chemical family Pyridine

metsulfuron (Escort and others)

Rate 0.5 to 1.0 ounce/a of 60% ai product (0.3 to 0.6 oz ai/a) or 1.0 gram product/gal for spot treatment.

Time pply spring or fall, when plants are actively growing.

Remarks For use on pasture and rangeland, conifer and hardwood plantations, and non-crop sites such as rights-of-way, ditchbanks of dry drainage ditches, and industrial sites. Metsulfuron may be used alone or in a tank-mix with either glyphosate or triclopyr, each at its labeled rate. Application sites differ between products; consult labels.

Site of action Group 2: acetolactate synthase (ALS) inhibitor

Chemical family Sulfonylurea

imazapic (Plateau)

Rate 4 to 6 oz of product/a or for spot treatments a 0.25 to 1.5% solution (0.3 to 1.9 oz product/gal)

Time May be applied preemergence or postemergence.

Remarks For use on native grasses and wildflowers, pastures, rangeland, non-crop areas including rights-of-way, and conifer site preparation. Many wildflowers are tolerant to the 4.0 oz/a rate.

Site of action Group 2: acetolactate synthase (ALS) inhibitor

Chemical family Imidazolinone

imazapyr (Arsenal, Habitat and others)

Rate 1% solution of 2 lbs ae/gal product for spot application (1.3 oz product/gal)

Time Apply when plants are actively growing.

Remarks For use on forestry sites, grass pasture and rangeland, non-crop agricultural areas, industrial sites, non-agricultural areas (such as airports, highway, railroad and utility rights-of-way, sewage disposal areas, etc.), and natural areas (such as wildlife habitats, recreation areas, campgrounds trailheads, and trails). Application sites differ between products; consult labels. Habitat is for use on specified aquatic sites, but only by federal or state agency personnel or applicators who are certified for aquatic pest control and are authorized by the state or local government.

Site of action Group 2: acetolactate synthase (ALS) inhibitor

Chemical family Imidazolinone

imazapyr + metsulfuron (Lineage Clearstand)

Rate 3 to 6 oz/a

Time Apply when plants are actively growing.

Remarks For use on conifer plantations, pasture and rangeland, wildlife management areas, and non-agricultural areas including ditch banks or dry drainage ditches, rights-of-way, and industrial sites.

Site of action Group 2: acetolactate synthase (ALS) inhibitor

Chemical family (imazapyr) Imidazolinone; (metsulfuron) sulfonylurea

aminopyralid + metsulfuron (Opensight, Chaparral)

Rate 3.3 oz product/a

Time Apply in the spring and early summer to rosette or bolting plants or in the fall to seedlings and rosettes.

Remarks For use on grass pastures, rangeland, natural areas (such as wildlife management areas, wildlife openings, wildlife habitats, recreation areas, campgrounds, trailheads and trails) and grazed areas around these sites. Do not use plant material treated with this product for mulch or compost.

Site of action Group 4: synthetic auxin; Group 2: acetolactate synthase (ALS) inhibitor

Chemical family (aminopyralid) Pyridine; (metsulfuron) Sulfonylurea

MCPA + fluroxypyr + dicamba (Change Up)

Rate 1.25 to 3 pints product/a or 0.46 to 1.10 fl oz product/1,000 sq ft or 0.75 to 2.0 oz product/gal for spot spray to wetting

Time Apply when plants are actively growing.

Remarks For use on ornamental lawns and turf, sod, and non-crop areas such as fencerows, hedgerows, roadsides, ditches, rights-of-way, utility power lines, railroads, airports and industrial sites.

Site of action Group 4: synthetic auxin

Chemical family (MCPA) Phenoxy acetic acid; (fluroxypyr) Pyridine; (dicamba) Benzoic acid

MCPA + fluroxypyr + triclopyr (Battleship III)

Rate 3 to 4 pints product/a or 1.1 to 1.5 oz product per 1,000 sq ft

Time Apply when plants are actively growing.

Remarks For use in ornamental turf, including residential turf, golf courses, sod farms and grass grown for seed.

Site of action Group 4: synthetic auxin

Chemical family (MCPA) Phenoxy acetic acid; (fluroxypyr and triclopyr) Pyridine

2,4-D + fluroxypyr + dicamba (Escalade and E-2)

Rate 2 to 5 pints product/a for non-turf areas (2 to 3 pints product/a for turfgrass) or 2.25 fl oz product/1,000 sq ft (0.75 to 1.10 fluid oz product/1,000 sq ft)

Time Apply anytime between the time when plants come into full leaf (spring) to when plants begin to go dormant. Best results are obtained when plants are young and actively growing.

Remarks For use in ornamental lawns and turf grasses, including sod farms, and non-crop sites such as rights-of-way, roadsides, industrial sites, fence rows, non-irrigation ditch banks, farmstead, recreational areas, and parks. E-2 is also for use on pastures, including those grown for hay or silage, and rangelands.

Site of action Group 4: synthetic auxin

Chemical family (2,4-D) Phenoxy acetic acid; (fluroxypyr) Pyridine; (dicamba) Benzoic acid

2,4-D + MCPP + 2,4-DP (Spoiler)

Rate 3 to 4 pints product/a or 1.1 to 1.5 fl oz product/1,000 sq ft (on cool season grasses)
2.5 to 3.5 pints product/a (on non-crop)

Time Appy from when plants come into full leaf until they start to go dormant. Best results when weeds are young and actively growing

Remarks For use on ornamental turf such as lawns, parks, cemeteries and golf courses; on sod farms; and on non-crop areas such as fencerows, hedgerows, roadsides, ditches, rights-of-way, utility power lines, railroads, airports and industrial sites.

Site of action Group 4: synthetic auxin

Chemical family (all) Phenoxy acetic acid

triclopyr + MCPA + 2,4-DP (Vengeance Plus)

Rate 1.6 to 3.2 pints product/a or 0.73 to 1.10 fl oz product/1,000 sq ft

Time Apply to plants that are actively growing.

Remarks For use in ornamental lawns and turf grasses, sod farms, and non-crop areas including rights-of-way, roadsides, fencerows, hedgerows, non-irrigation ditch banks, railroads, industrial management sites, and airports.

Site of action Group 4: synthetic auxin

Chemical family (triclopyr) Pyridine; (MCPA and 2,4-DP) Phenoxy acetic acid

2,4-D + quinclorac + dicamba (Quincept)

Rate 7 to 8 pints product/a or 2.6 to 2.9 fl oz product/1,000 sq ft

Time Apply to plants that are actively growing.

Remarks For use on ornamental turf including lawns or grounds around residential and commercial establishments, multi-family dwellings, military and other institutions, parks, airports, roadsides, schools, picnic grounds, athletic fields, houses of worship, cemeteries, golf courses and sod farms.

Site of action Group 4: synthetic auxin

Chemical family (2,4-D) Phenoxy acetic acid ; (quinclorac) Quinoline carboxylic acid; (dicamba) Benzoic acid

imazapyr + aminocyclopyrachlor + metsulfuron (Viewpoint)

Rate 13 to 20 oz product/a or for spot application 2.6 to 4.0 oz product/5 gal

Time Apply preemergence or early postemergence when plants are actively germinating or growing.

Remarks For use on non-agricultural areas (such as airports, highway, railroad and utility rights-of-way, sewage disposal areas, etc.); uncultivated agricultural areas (such as farmyards, fuel storage areas, fencerows, non-irrigation ditchbanks, barrier strips, etc.); industrial sites (such as lumberyards, pipeline and tank farms, etc.); and natural areas (such as wildlife habitats). Do not use plant material treated with this product for mulch or compost.

Site of action Group 2: acetolactate synthase (ALS) inhibitor (imazapyr and metsulfuron); Group 4: synthetic auxin (aminocyclopyrachlor)

Chemical family (imazapyr) Imidazolinone; (aminocyclopyrachlor) Pyrimidine; (metsulfuron) Sulfonylurea

aminocyclopyrachlor + metsulfuron (Streamline)

Rate 4.75 to 9.5 oz product/a or for spot application 0.95 to 1.9 oz product/5 gal

Time Apply preemergence or early postemergence when seeds are germinating and seedlings are actively growing.

Remarks For non-crop use, including industrial turfgrass. Do not use plant material treated with this product for mulch or compost.

Site of action Group 2: acetolactate synthase (ALS) inhibitor (metsulfuron); Group 4: synthetic auxin (aminocyclopyrachlor)

Chemical family (aminocyclopyrachlor) Pyrimidine; (metsulfuron) Sulfonylurea