cats claw vine

Macfadyena unguis-cati

Cat's claw vine

More Images and Information

Download a Recognition Card (PDF 1 MB)


Macfadyena unguis-cati, or Cats claw vine, is a native from West Indies and Mexico to Argentina. In Florida populations have been documented in several counties, including Escambia, Alachua, Seminole, Brevard, Hillsborough, Hernando, and Dade counties. Cats claw vine gets its name from the 3-pronged claw-like climbing appendages that are used to grasp onto plants or surfaces. Cats claw vine is considered a Category I exotic invasive by Florida’s Exotic Pest Plant Council.

back to top



Cats claw vine is a high-climbing woody vine that can grow up to 50 feet in length, often rooting at the node. The dark green leaves are opposite, compound, with small, wide leaflets that mature into ovate or lanceolate shaped leaves. Stems are vine-like and covered with lenticels. Tendrils are forked, with the tip being claw like. The flowers are trumpet shaped, yellow in color, 3 inches long and 4 inches across. These are solitary or in axillary clusters. Fruit capsules are linear and flat, roughly 20 inches long containing oblong, winged seeds that are wind-dispersed. Tubers are produced by both young and mature plants and allow for regrowth. This species is very similar in appearance to the native cross-vine (Bignonia capreolata), but the cross-vine possesses red-orange flowers.

back to top



Cats claw vine is a long lived plant that grows relatively slow. As the plant matures, typically in its second year, root tubers and stolons form. Tubers and stolons can also form at each node if the vine is creeping along the soil surface. Pursuant to its rooting abilities, a dense mat will cover the forest floor and smother native vegetation. Areas that are susceptible to invasion to cats claw include river or stream banks, near human habitations, and undisturbed hammocks.

back to top





The first step in preventative control of cats claw vine is to limit planting and removal of existing plants within the landscape. If possible, removal should occur before seeds are produced. Care must be exercised to prevent seed spread and dispersal during the removal process.

back to top



Inform the public to refrain from purchasing, propagating, or planting cats claw vine due to its ability to escape into natural areas.

back to top



Continuous cutting or mowing will provide eventual control, but this process could take several months or years to deplete the reserves of larger plants. During this process it is essential to prevent seed formation.  

back to top



There are no known biological control agents for cats claw vine.

back to top



Current chemical controls include cutting the vines and painting the cut ends with glyphosate (100% solution) herbicide. Triclopyr may provide good control as well (100% solution as a basal bark treatment) or 1-2% foliar spray with surfactant.

back to top


References and Useful Links:

Floridata Homepage

University of Florida Center for Aquatic and Invasive Plants

Langeland, K.A. and K. Craddock Burks. 1998. Identification and Biology of Non-Native Plants in Florida's Natural Areas. IFAS Publication SP 257. University of Florida, Gainesville. 165 pp.

University of Florida’s Cooperative Extension Electronic Data Information Source

The Plant Conservation Alliance's Alien Plant Working Group. Weeds Gone Wild: Alien Plant Invaders of Natural Areas

Pacific Island Ecosystems at Risk (PIER). Plant Threats to Pacific Ecosystems

Invasive Plants of the Eastern United States

USDA Natural Resources Conservation Service. Plants Database

back to top

Excerpted from the University of Florida, IFAS Extension, Circular 1529, Invasive Species Management Plans for Florida, 2008 by:

Greg MacDonald, Associate Professor Jay Ferrell, Assistant Professor and Extension Weed Specialist
Brent Sellers, Assistant Professor and Extension Weed Specialist
Ken Langeland, Professor and Extension Weed Specialist Agronomy Department, Gainesville and Range Cattle REC, Ona
Tina Duperron-Bond, DPM – Osceola County
Eileen Ketterer-Guest, former Graduate Research Assistant

back to top

Invasive Plant Management - Florida Fish and Wildlife Commission

Center for Aquatic & Invasive Plants | 7922 NW 71st St. | Gainesville, Fl. 32653 | 352-392-1799
Copyright 2007 University of Florida