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Cutleaf Evening-primrose

Description

Cutleaf evening-primrose is a herbaceous weed that can grow to 28 inches tall. Often, the plant is upright, but the stems also recline and creep along the ground. The leaves are alternate, and toothed and lobed. The flowers are striking, and are yellow but sometimes have pink tinges to them. The flowers first appear in late spring and continue into early fall. Also unique is the elongated and curved seed pod located on the stems of the plant. Cutleaf evening primrose is found in fields, fencerows and waste areas, and is classified as a biennial, winter annual and sometimes a summer annual.

Cultural Control

Proper turf management is important for biennial broadleaf weed control. Maintain a dense, actively growing turf through proper mowing, fertilizing, and watering practices. Mow at the proper height for your selected adapted turfgrass. Coring and traffic control reduce compaction and encourage desirable turfgrass competition. It is best to control this biennial broadleaf weed in spring or fall, if actively growing at these times.

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.

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.

Presentations

Publications

Species Data

Growth Season/Life Cycle

winter annual weed or biennial weed

Growth Habit

rosette or upright

cutleafeveningprimrose p1190491
cutleafeveningprimrose p1190491
cutleafeveningprimrose p1190491
eveningprimrose p1060144
eveningprimrose p1060144
eveningprimrose p1060144
eveningprimrose p1060238
eveningprimrose p1060238
eveningprimrose p1060238
eveningprimrose p1060670
eveningprimrose p1060670
eveningprimrose p1060670
eveningprimrose p1070265
eveningprimrose p1070265
eveningprimrose p1070265
eveningprimrose p1180716
eveningprimrose p1180716
eveningprimrose p1180716
Leaflet Number

one

Leaf Margin

lobed

eveningprimrose p1060673
eveningprimrose p1060673
eveningprimrose p1060673
Leaf Hairs

upper/lower surface

Leaf/Leaflet Shape

linear/oblong/oval/egg-shaped/elliptical

cutleafeveningprimrose p1190491
cutleafeveningprimrose p1190491
cutleafeveningprimrose p1190491
eveningprimrose p1060670
eveningprimrose p1060670
eveningprimrose p1060670
eveningprimrose p1060673
eveningprimrose p1060673
eveningprimrose p1060673
Leaf Venation

pinnate

cutleafeveningprimrose p1190491
cutleafeveningprimrose p1190491
cutleafeveningprimrose p1190491
eveningprimrose p1060673
eveningprimrose p1060673
eveningprimrose p1060673
Leaf Arrangement

alternate; whorled or basal rosette

cutleafeveningprimrose p1190491
cutleafeveningprimrose p1190491
cutleafeveningprimrose p1190491
eveningprimrose p1060144
eveningprimrose p1060144
eveningprimrose p1060144
eveningprimrose p1060670
eveningprimrose p1060670
eveningprimrose p1060670
eveningprimrose p1060673
eveningprimrose p1060673
eveningprimrose p1060673
Root Type

taproot; fibrous