NC State Extension Publications

Description

Hairy vetch is a trailing winter annual, biennial, or summer annual weed that forms large mats of vegetation. The leaves of hairy vetch are oblong, with 5-10 pairs of leaves per leaflet. Tendrils form on the ends of the leaves. Purple flowers form in early to mid summer.

Cultural Control

Hairy vetch is a winter annual, biennial, or summer annual weed that forms large mats of vegetation. 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.

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
mesotrione, MOA 27 (4 SC) (Tenacity) 0.092 to 0.183 fl oz 4 to 8 fl oz 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 prodiamine 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.​
[sulfentrazone + prodiamine], MOA 14 + 3 (4 SC) (Echelon) 0.184 to 0.826 fl oz 0.5 to 2.25 pt 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 inch 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. [Sulfentrazone + prodiamine should not be applied to cool-season turf with N-containing fertilizers unless some short-term discoloration is tolerable.​

Species Data

Hairy vetch growth habit.

Figure 1. Hairy vetch growth habit.

Hairy vetch growth habit.

Figure 2. Hairy vetch growth habit.

Hairy vetch growth habit.leaflet shape.

Figure 3. Hairy vetch growth habit.leaflet shape.

Hairy vetch leaflet shape.

Figure 4. Hairy vetch leaflet shape.

Hairy vetch leaflet shape.

Figure 5. Hairy vetch leaflet shape.

Hairy vetch flower color.

Figure 6. Hairy vetch flower color.

Hairy vetch flower color.

Figure 7. Hairy vetch flower color.

Hairy vetch flower color.

Figure 8. Hairy vetch flower color.

Hairy vetch flower color.

Figure 9. Hairy vetch flower color.

Hairy vetch flower color.

Figure 10. Hairy vetch flower color.

Hairy Vetch flower color.

Figure 11. Hairy Vetch flower color.

Author:

Professor and Extension Turfgrass Specialist
Crop and Soil Sciences

Publication date: Nov. 27, 2017

North Carolina State University and North Carolina A&T State University commit themselves to positive action to secure equal opportunity regardless of race, color, creed, national origin, religion, sex, age, veteran status or disability. In addition, the two Universities welcome all persons without regard to sexual orientation.