Fast-growing vine, usually has three leaflets, but may be fused into 1-2 with major to minor lobes. Leaflets 2-4 in. wide and hairy on edges.
Light purple/pink flowers with a fragrant, sweet grape smell in late summer.
Roots are fleshy with massive tap roots.
Origin--Asia (China, Japan)
Distribution
Infestations spotty, but scattered over entire region at low to mid-elevations, especially along road sides and farms.
Seeds may be spreading and germinating in forests disturbed by fire or clearing.
Threat
Kudzu kills or degrades other plants by shading them under a blanket of leaves, by girdling stems and tree trunks, and by breaking branches or uprooting trees by its weight.
Control
Root system must be killed. Mow or cut monthly over two or more growing seasons.
Sever vines and treat roots to get foliar levels manageable for more direct treatments.
Late season cutting of vines at root tops followed by immediate stump treatment with 25% glyphosate works best. Foliar application of glyphosate to small plants repeatedly in a season may keep plants in check. No biological controls available.
Burning will not kill roots and may stimulate dormant seeds to germinate. Seedlings can be herbicided or pulled, and fire helps clear site for native species and can reveal hidden obstacles.
Similar Plants
Native grapevines similar at a distance, but leaf edges saw-toothed, not smooth and not divided into 3 leaflets. In winter other vines generally lack fuzziness on youngest growth.
Links to sites with additional information on Kudzu
