Clematis terniflora
Sweet autumn virginsbower (Clematis terniflora) is a climbing, semi-evergreen, ornamental vine with opposite, compound leaves (3 to 5 leaflets) with entire (smooth) leaf edges. White, fragrant, four-petaled flowers appear in late summer through fall. Seedheads are showy with long, silvery-gray, feather-like hairs attached. Seed production is prolific.
The native species (Clematis virginiana) is very similar (margins of leaves of the native tend to be toothed), but not as prone to self-seeding and spreading. The non-native, invasive Clematis terniflora prefers sun to partial shade and is found invading forest edges, rights of way, and urban green spaces, especially near creeks. It can create sprawling mats that choke out native vegetation. Clematis terniflora is native to Japan and China and was introduced into the United States as an ornamental plant. See its range in Missouri here.
Treatment in spring, before vine sprawling is ideal, but it may be harder to see. In late summer, its abundant flowers make it highly visible. Treat with a foliar spray of 3% triclopry with surfactant. Avoid overspray to prevent impacting desirable plants.
Resources:
- Learn about sweet autumn virginsbower at Invasive.org
- See more photos on the MU Weed ID page for sweet autumn virginsbower
Representative photos of Sweet autumn virginsbower:
Sweet autumn virginsbower impact, abundance, and trend in Missouri
