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Mouseear Chickweed

Description

Mouseear chickweed acts as a winter annual in eastern North Carolina and as a perennial in the western part of the state, especially at higher elevations. It has a vigorous prostrate growth habit. Hairy stems may creep along the ground and take root at nodes touching the soil. The small, white flowers have five slightly notched petals. Mouseear chickweed is similar in growth habit (spreading) and appearance to common chickweed, but mouseear chickweed leaves are dark green or gray-green, and are covered with soft hairs.

Cultural Control

Chickweed will survive under close mowing, forming dense patches which crowd out the desirable turfgrass. This weed quickly invades thin turf areas especially where there is good soil moisture. Shade and frequent watering encourage chickweed 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.

Postemergence Control or Suppression of Summer Weeds Such as Crabgrass Species

Herbicide and Formulation

thiencarbazone + foramsulfuron + halosulfuron, MOA 14 + 2 + 2 (Tribute Total) 60.5 WG

Amount of Formulation per 1,000 sq ft

0.0735 oz

Amount of Formulation per Acre

3.2 oz

Pounds Active Ingredient per Acre

0.121

Precaution and Remarks

Apply to well-established residential and commercial bermudagrass and zoysiagrass (Emerald, Meyer, Zeon) lawns, golf courses (excluding greens), athletic fields, sod farms, roadsides, parks, cemeteries and recreational areas. Do not exceed 3.2 ounces per acre per application or 6.4 ounces per acre yearly. Use 0.25 to 0.5% by volume nonionic surfactant or 0.5 to 1% by volume methylated seed oil. After application, wait 12 weeks to overseed ryegrass or bermudagrass. Wait 1 month after bermudagrass seedling emergence and 2 weeks after sprigging or sodding bermudagrass before treating. Temporary stunting and yellowing may last up to 2 weeks but turf will recover. Crabgrass and goosegrass are controlled up to 2 tiller stage.

Postemergence Control

Herbicide and Formulation

mecoprop, MOA 4 (MCPP-p 4 Amine) 1.9 L (Mecomec 2.5) 1.16 L (Mecomec 4) 1.74 L

Amount of Formulation per 1,000 sq ft

1 to 1.5 fl oz 1.5 to 2.25 fl oz 0.75 to 1.5 fl oz

Amount of Formulation per Acre

2.7 to 4 pt 4 to 6 pt 2 to 4 pt

Pounds Active Ingredient per Acre

0.64 to 0.95 0.58 to 0.87 0.43 to 0.87

Precaution and Remarks

Observe same precaution as for 2,4-D. May be used on bentgrass, carpetgrass, centipedegrass, St. Augustinegrass, and other turf grasses.

Postemergence Control

Herbicide and Formulation

dicamba, MOA 4 (Banvel) 4 SL

Amount of Formulation per 1,000 sq ft

1 to 2 tsp

Amount of Formulation per Acre

0.5 to 1 pt

Pounds Active Ingredient per Acre

0.25 to 0.5

Precaution and Remarks

Apply as foliar spray to growing weeds. Prevent injury to ornamentals. Avoid rooting zone of shallow-rooted trees and shrubs.

Postemergence Control

Herbicide and Formulation

diglycolamine, MOA 4 (Vanquish) 4 SL

Amount of Formulation per 1,000 sq ft

1 to 4.5 tsp

Amount of Formulation per Acre

0.5 to 2 pt

Pounds Active Ingredient per Acre

0.25 to 1

Precaution and Remarks

Do not exceed 1 pint per acre on bentgrass, carpetgrass, buffalograss, and St. Augustinegrass. Apply to newly seeded grasses after the second mowing. Do not exceed 0.25 pint per acre on extended sensitve plant roots on sandy soils and 0.5 pint per acre on clay soils.

Postemergence Control

Herbicide and Formulation

triclopyr + clopyralid, MOA 4 + 4 (Confront) 3 SL (2-D) 3 SL

Amount of Formulation per 1,000 sq ft

0.37 to 0.74 fl oz

Amount of Formulation per Acre

1 to 2 pt

Pounds Active Ingredient per Acre

0.28 to 0.56 + 0.09 to 0.19

Precaution and Remarks

Do not apply to home lawns. May be used on centipedegrass, bermudagrass, zoysiagrass, tall fescue, creeping red fescue, chewing fescue, Kentucky bluegrass, perennial ryegrass. Repeat treatment may be necessary for prostrate spurge and wild violet. 2-D: maintain 0.5 inch height for warm season turf. Do not apply to bermudagrass sod farms. Wait 3 weeks to reseed. Do not use grass clippings for compost or mulch.

Postemergence Control

Herbicide and Formulation

MCPA ester + triclopyr ester + dicamba, MOA 4 + 4 + 4 (Cool Power) 3.6 EC

Amount of Formulation per 1,000 sq ft

0.91 to 1.29 fl oz

Amount of Formulation per Acre

2.5 to 3.5 pt

Pounds Active Ingredient per Acre

1.125 to 1.575

Precaution and Remarks

May be applied to home lawns by a commercial applicator. Not for use on turf grown for resale or other commercial use as sod or seed production. Use on perennial bluegrass, ryegrass, fescue species, bentgrass (excluding greens and tees), bermudagrass, zoysiagrass, and bahiagrass. Do not apply to seedling grasses until well established. Wait 3 to 4 weeks after application to seed.

Postemergence Control

Herbicide and Formulation

MCPA amine + triclopyr amine + dicamba, MOA 4 + 4 + 4 (Horsepower) 4.56 L

Amount of Formulation per 1,000 sq ft

0.73 to 1.1 fl oz

Amount of Formulation per Acre

2 to 3 pt

Pounds Active Ingredient per Acre

1.14 to 1.71

Precaution and Remarks

Postemergence Control

Herbicide and Formulation

MCPA amine + fluroxypyr ester + triclopyr amine, MOA 4+4+4 (Battleship III) 3.41 L

Amount of Formulation per 1,000 sq ft

0.37 to 1.47 fl oz

Amount of Formulation per Acre

1 to 4 pt

Pounds Active Ingredient per Acre

0.42625 to 1.705

Precaution and Remarks

Apply by a commercial applicator to residential, industrial, and institutional lawns, sod farms, parks, cemeteries, athletic fields, roadsides, and golf courses excluding greens and tees. May apply to bentgrass, Kentucky bluegrass, perennial ryegrass, fescue species, bahiagrass, bermudagrass, centipedegrass, and zoysiagrass. Do not spray on warm season turf less than 0.5 inch and do not exceed 3 pints per acre. Generally apply 3 to 4 pints per acre except on fairway bentgrass, which can only tolerate 2 pints per acre. Wait 3 to 4 weeks after application to reseed. Check label for spray adjuvant recommendation.

Postemergence Control

Herbicide and Formulation

carfentrazone-ethyl, MOA 14 (QuickSilver) 1.9 EW

Amount of Formulation per 1,000 sq ft

0.0126 to 0.048 fl oz

Amount of Formulation per Acre

0.55 to 2.1 fl oz

Pounds Active Ingredient per Acre

0.008 to 0.031

Precaution and Remarks

May be applied to bahiagrass, bermudagrass, buffalograss, centipedegrass, St. Augustinegrass, zoysiagrass, Kentucky bluegrass, tall fescue, fine fescue, perennial ryegrass, and bentgrass. To expand the weed spectrum and extend control of the weeds listed here and on the label, carfentrazone-ethyl can be tank mixed with the entire range of phenoxy products—amines, esters, and other salts—and is also compatible with dicamba, atrazine, glyphosate, glufosinate, clopyralid, triclopyr, and MSMA. When applied alone, add 0.12 to 0.25% nonionic surfactant.

Postemergence Control

Herbicide and Formulation

carfentrazone + 2,4-D ester + MCPP + dicamba, MOA 14 + 4 + 4 + 4 (Speed Zone) 2.2 EC

Amount of Formulation per 1,000 sq ft

0.75 to 1.8 fl oz

Amount of Formulation per Acre

2 to 5 pt

Pounds Active Ingredient per Acre

0.55 to 1.375

Precaution and Remarks

May be used on annual and perennial bluegrass, annual and perennial ryegrass, tall and fine fescue, creeping and colonial bentgrass, common and hybrid bermudagrass, and zoysiagrass. For use in ornamental turf, golf courses, lawns, sod farms, cemeteries, and parks. Optimum results when applied when temperatures are between 45 and 75 degrees F but may be applied up to 90 degrees F. Lower rates may be used in cooler weather. Rainfast within 3 hr and may reseed after 2 week. May apply 3 to 4 wk after sodding, sprigging, or plugging. Also may be used on bahiagrass, buffalograss, St. Augustinegrass, centipedegrass, seashore paspalum, and kikuyugrass. May reseed after 1 week.

Postemergence Control

Herbicide and Formulation

carfentrazone + 2,4-D ester + MCPP + dicamba, MOA 14 + 4 + 4 + 4 (Speed Zone Southern) 0.81 EC

Amount of Formulation per 1,000 sq ft

0.55 to 2.2 fl oz

Amount of Formulation per Acre

1.5 to 6 pt

Pounds Active Ingredient per Acre

0.1519 to 0.6075

Precaution and Remarks

May be used on annual and perennial bluegrass, annual and perennial ryegrass, tall and fine fescue, creeping and colonial bentgrass, common and hybrid bermudagrass, and zoysiagrass. For use in ornamental turf, golf courses, lawns, sod farms, cemeteries, and parks. Optimum results when applied when temperatures are between 45 and 75 degrees F but may be applied up to 90 degrees F. Lower rates may be used in cooler weather. Rainfast within 3 hr and may reseed after 2 week. May apply 3 to 4 wk after sodding, sprigging, or plugging. Also may be used on bahiagrass, buffalograss, St. Augustinegrass, centipedegrass, seashore paspalum, and kikuyugrass. May reseed after 1 week.

Postemergence Control

Herbicide and Formulation

carfentrazone + MCPA ester + MCPP + dicamba, MOA 14 + 4 + 4 + 4 (Power Zone) 2.91 EC

Amount of Formulation per 1,000 sq ft

0.75 to 2.2 fl oz

Amount of Formulation per Acre

2 to 6 pt

Pounds Active Ingredient per Acre

0.7275 to 2.1825

Precaution and Remarks

Same precautions and turf uses as Speed Zone 2.2 EC except cannot be applied to creeping and colonial bentgrass.

Postemergence Control

Herbicide and Formulation

sulfentrazone + 2,4-D amine + MCPP + dicamba, MOA 14 + 4 + 4 + 4 (Surge) 2.18 SL

Amount of Formulation per 1,000 sq ft

0.92 to 1.84 fl oz

Amount of Formulation per Acre

2.5 to 5 pt

Pounds Active Ingredient per Acre

0.68 to 1.36

Precaution and Remarks

Apply 2.5 to 3.25 pints per acre on warm season turf including bermudagrass species, zoysiagrass, bahiagrass, and buffalograss. Apply 3.25 to 4 pints per acre on cool season turf including species of bluegrass, ryegrass, fescue, and bentgrass (excluding greens and tees). 4 to 5 pints per acre needed to control corn speedwell and wild violet. Turf areas include residential, ornamental, institutional, and sod farms. Apply to grass seedlings after second mowing. Apply to sodded, sprigged, or plugged areas 3 to 4 weeks after operations. Treated areas may be reseeded 3 weeks after application.

Postemergence Control

Herbicide and Formulation

triclopyr ester + sulfentrazone + 2,4-D ester + dicamba, MOA 4 + 14 + 4 + 4 (T Zone) 2.51 EC

Amount of Formulation per 1,000 sq ft

0.75 to 1.5 fl oz

Amount of Formulation per Acre

2 to 4 pt

Pounds Active Ingredient per Acre

0.628 to 1.26

Precaution and Remarks

Apply 2 to 2.25 pints per acre on fully dormant bermudagrass, zoysiagrass, and bahiagrass. Apply 3.25 to 4 pints per acre on annual and perennial bluegrass and ryegrass, and tall, red, and fine fescue. Rainfast within 3 hours. Approved turf areas include residential, ornamental, institutional, noncropland, and sod farms. Apply to grass seedlings after the second or third mowing. Apply to sodded, sprigged, or plugged areas 3 to 4 weeks after operations. Treated areas may be reseeded 3 weeks after application.

Postemergence Control

Herbicide and Formulation

florasulam, MOA 2 (Defendor) 0.42 SC

Amount of Formulation per 1,000 sq ft

0.09 fl oz

Amount of Formulation per Acre

4 fl oz

Pounds Active Ingredient per Acre

0.013125

Precaution and Remarks

Can be used on all established major warm and cool season turfgrass species in residential lawns, golf courses (excluding putting greens), sports fields, sod farms and commercial turf areas. Controls Carolina geranium, species of chickweed, clover and dandelion, vetch, dollarweed and common groundsel. Do not exceed 3 applications or 12 fluid ounces per acre per year. Apply to newly seeded or sprigged turf after third mowing or when tillering and secondary root development has occurred. Wait 4 weeks to reseed. When used alone, add a nonionic surfactant at 0.2% by volume.

Postemergence Control

Herbicide and Formulation

penoxsulam, MOA 2 (various brands) 0.014 G or 0.03 G

Amount of Formulation per 1,000 sq ft

3.4 to 10.3 lb or 1.7 to 4.6 lb

Amount of Formulation per Acre

150 to 450 lb or 75 to 200 lb

Pounds Active Ingredient per Acre

0.02 to 0.06

Precaution and Remarks

May be applied to residential and commercial lawns, golf courses (excluding greens and tees), parks, athletic fields, and sod farms. Use on turf that has been mowed at least 3 times or sprigs that have developed secondary root systems. Apply up to 75 pounds per acre of 0.03 G or 150 pounds per acre of 0.014 G to perennial ryegrass and tall fescue. Apply up to 150 pounds per acre of 0.03 G or 300 pounds per acre of 0.014 G to bentgrass, Kentucky bluegrass, and fine fescue. Apply up to 200 pounds per acre of 0.03 G or 450 pounds per acre of 0.014 G to bermudagrass, centipedegreass, zoysiagrass, and St. Augustinegrass. Do not apply to dormant centipedegrass. Reapply at 4 weeks if needed but do not exceed 300 pounds per acre of 0.03 G or 650 pounds per acre of 0.014 G per season. After treatment, wait 3 to 4 weeks to reseed.

Carpetweed

Herbicide and Formulation

pyraflufen ethyl, MOA 14 (Octane 2% SC) 0.177 SC

Amount of Formulation per 1,000 sq ft

0.016 to 0.092 fl oz

Amount of Formulation per Acre

0.7 to 4 fl oz

Pounds Active Ingredient per Acre

0.000938 to 0.0055

Precaution and Remarks

Used in established sod farm and ornamental turf by commercial applicators and professional landscapers only. Turf can be newly seeded, sodded, or sprigged as long as it is established and not under stress. Tolerant turfgrasses include bermudagrass, centipedegrass, St. Augustinegrass, zoysiagrass, tall fescue, perennial ryegrass, perennial bluegrass, and creeping bentgrass (not greens or tees). Apply 1 to 4 fl ounces alone to 3- to 6-inch tall weeds. For larger weeds and broader spectrum control, apply 0.75 to 1.5 fl ounces and tank mix with 2,4-D, mecoprop, dicamba, chloroprop, MCPA, triclopyr, or fluroxypyr.

Postemergence Control

Herbicide and Formulation

2,4-D amine + fluroxypyr + dicamba, MOA 4 + 4 + 4 (Escalade) 4.4 SL or (Escalade Low Odor) 4.4 SL (Escalade 2) 4 SL

Amount of Formulation per 1,000 sq ft

0.46 to 1.84 fl oz 0.36 to 1.1 fl oz

Amount of Formulation per Acre

1.25 to 5 pt 1 to 3 pt

Pounds Active Ingredient per Acre

0.69 to 2.75 0.5 to 1.5

Precaution and Remarks

Use on perennial bluegrass and ryegrass, tall fescue, creeping bentgrass (excluding greens and tees), bermudagrass species, bahiagrass, zoysiagrass, and St. Augustinegrass in residential, industrial, and institutional lawns, parks, cemeteries, athletic fields, golf courses, and sod farms. Use on St. Augustinegrass sod farms only. Apply 1 to 2 pints per acre on creeping bentgrass and 1.5 to 1.8 pints per acre on warm season turf grown for sod. Apply 2 to 3 pints per acre to all other turf areas. For non-turf areas, rate can be increased to 2 to 5 pinst per acre. Application can be made to grass seedlings after second mowing and to newly sodded, sprigged, or plugged grasses 3 to 4 weeks after operations.

Postemergence Control

Herbicide and Formulation

MCPA amine + fluroxypyr ester + dicamba, MOA 4 + 4 + 4 (Change Up) 4.8 SL

Amount of Formulation per 1,000 sq ft

0.73 to 1.1 fl oz

Amount of Formulation per Acre

2 to 3 pt

Pounds Active Ingredient per Acre

1.2 to 1.8

Precaution and Remarks

Same turf tolerances and uses as Escalade 2 in addition to centipedegrass. Only spot treat St. Augustinegrass when temperature exceeds 80 degrees F. Do not apply more than two applications per year totaling 3 pints per acre. For non-turf areas, rate can be increased to 2 to 5 pints per acre. Application can be made to grass seedlings after second mowing and to newly sodded, sprigged, or plugged grasses 3 to 4 weeks after operations. Sod farm rates include 1.25 pints per acre for creeping bentgrass, 2 to 3 pints per acre for all other cool season grasses listed on label and 1.5 to 1.8 pints per acre for all warm season grasses listed on label.

Presentations

Publications

Species Data

Growth Season/Life Cycle

winter annual or biennial or perennial weed

Growth Habit

prostrate, spreading

autopsy
autopsy
autopsy
autopsy1
autopsy1
autopsy1
flower
flower
flower
mousearlcommonr
mousearlcommonr
mousearlcommonr
mouseear chickweed close
mouseear chickweed close
mouseear chickweed close
p1020738
p1020738
p1020738
p1050687
p1050687
p1050687
seedling2
seedling2
seedling2
Leaflet Number

one

Leaf Margin

smooth

mousear
mousear
mousear
Leaf Hairs

very dense, soft hairs on upper surface, hairs on veins on bottom surface

flower
flower
flower
flower1
flower1
flower1
flower4
flower4
flower4
leaves
leaves
leaves
mousear
mousear
mousear
mouseear chickweed close
mouseear chickweed close
mouseear chickweed close
p1020738
p1020738
p1020738
p1040171
p1040171
p1040171
seedling2
seedling2
seedling2
Leaf/Leaflet Shape

oval to elliptical without petiole

mousear
mousear
mousear
seedling2
seedling2
seedling2
weed1
weed1
weed1
Leaf Width

1/2 - 1 inch

Leaf Venation

pinnate

mousear
mousear
mousear
weed1
weed1
weed1
Leaf Arrangement

opposite

autopsy
autopsy
autopsy
autopsy1
autopsy1
autopsy1
flower1
flower1
flower1
flower4
flower4
flower4
mousear
mousear
mousear
weed1
weed1
weed1
Root Type

fibrous

Flower Color

white

flower
flower
flower
flower1
flower1
flower1
p1050687
p1050687
p1050687
seedhead
seedhead
seedhead