Fallopia convolvulus
Cornbind (Fallopia convolvulus) also known as Black-bindweed, is a climbing, spreading vine that grows to 1 – 1.5 m long with stems that twine clockwise around other plant stems. The leaves are arrow-shaped up to 9 cm long by 6 cm wide. The flowers (November to April) are pale green, small and grow in clusters closer to the ends of the stems. Seeds are triangular and shiny black. Cornbind is more commonly found in the South Island (South Canterbury), but is showing up increasingly in cultivated areas in Hawkes Bay and Wellington.

Germinating in the spring, Cornbind (Fallopia convolvulus) is an annual with a scrambling and twining growth habit. It is problematic in cultivated crops and is common in the North Island but is very abundant in Canterbury.


  • Narrow club shaped
  • Apex round with mild point
  • Base tapered. Stalkless


  • Heart shaped, pointed at the apex
  • Indented at the base – basal lobes pointed
  • Long stalked

Cornbind has long slender stems that twine in a clockwise direction. The arrow shaped leaves are large and greenish-white flowers are produced on stems that arise from leaf axils.

The flowers produce shiny black seeds.

Related Pests