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Sericea Lespedeza

Description

Sericea lespedeza is a perennial weed that is commonly found in pasture areas. The woody stems grow upright. Individual leaves are oblong in shape, and appear to have been folded. Small white and purple flowers can be found in the axils of the leaves. An important identifying characteristic of sericea lespedeza is the stiff hairs that can be found on the stem.

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

Postemergence Control

Herbicide and Formulation

thiencarbazone-methyl + iodosulfuron + dicamba, MOA 14 + 2 + 4 (Celsius WG) 68 WG

Amount of Formulation per 1,000 sq ft

0.057 to 0.113 oz

Amount of Formulation per Acre

2.5 to 4.9 oz

Pounds Active Ingredient per Acre

0.106 to 0.208

Precaution and Remarks

For use by licensed applicators in residential and commercial lawns, golf courses (excluding greens), sports fields, parks, recreational areas, roadsides, school grounds, and sod farms. Provides up to 60 days residual control. Use on bermudagrass, zoysiagrass, centipedegrass, and St Augustinegrass. Apply maximum 7.4 ounces per acre per season. Safe to use at high temperatures. Ryegrass can be overseeded 2 weeks after application. Apply 30 days prior to seeding bermudagrass or zoysiagrass. Wait 2 weeks after bermudagrass seedlling emergence or sprigging operation before applying. For zoysiagrass, wait 3 weeks after seedling emergence before applying. A nonionic surfactant or methylated seed oil at 0.25% v/v is required for optimum control.

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

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

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.

Presentations

Publications

Species Data

Growth Season/Life Cycle

perennial weed

Growth Habit

upright; may reach five feet in height

leafarrangement
leafarrangement
leafarrangement
sericealespedeza
sericealespedeza
sericealespedeza
Leaflet Number

three

autopsy
autopsy
autopsy
leaf
leaf
leaf
leafarrangement
leafarrangement
leafarrangement
leafarrangement2
leafarrangement2
leafarrangement2
Leaf Margin

smooth

autopsy
autopsy
autopsy
leaf
leaf
leaf
leafarrangement
leafarrangement
leafarrangement
leafarrangement2
leafarrangement2
leafarrangement2
leafback
leafback
leafback
Leaf Hairs

upper/lower surface; dense

leafback
leafback
leafback
Leaf/Leaflet Shape

linear/oblong

autopsy
autopsy
autopsy
leaf
leaf
leaf
leafarrangement
leafarrangement
leafarrangement
leafarrangement2
leafarrangement2
leafarrangement2
leafback
leafback
leafback
Leaf Width

1/2 - 1 inch; leaflets are 0.5 - 0.75 inches (13 - 19 mm) long

leaf
leaf
leaf
leafarrangement
leafarrangement
leafarrangement
leafarrangement2
leafarrangement2
leafarrangement2
leafback
leafback
leafback
Leaf Venation

pinnate; prominent midvein on each leaflet

leaf
leaf
leaf
leafarrangement
leafarrangement
leafarrangement
leafarrangement2
leafarrangement2
leafarrangement2
leafback
leafback
leafback
Leaf Arrangement

alternate

autopsy
autopsy
autopsy
flower
flower
flower
leafarrangement
leafarrangement
leafarrangement
leafarrangement2
leafarrangement2
leafarrangement2
sericealespedeza
sericealespedeza
sericealespedeza
Root Type

woody taproot

Flower Color

blue/purple; white

flower
flower
flower
flower2
flower2
flower2