Perennial climbing vine. Large, bell-shaped, greeny-white to purple flowers (Aug-May). Light green, oval leaves, smooth-edged, hairless, prominent purplish vein & tendrils. Stems angular, often purplish when young. Winged seeds released from large green oval fruit that explodes during summer.
Forest margins, roadsides, riverbanks, gardens, open areas. Susceptible to frost, heavy shade, Grows in wide range of soils & climates.
Seed dispersed locally by wind, over distance by water, soil movement. Vegetative spread by stem fragments.
Smothers native vegetation, will kill larger plants, suppress growth of seedlings. Fast growing.
Follow up 6-monthly on seedlings.
1. Report it immediately to the Auckland Council Biosecurity team, who will arrange for its control at their expense.
2. Dig out scattered plants.
3. Cut & paint large stems (100ml Tordon BK/1L or 200ml 2,4-D plus dicamba/1L).
4. Spray, spring- summer, (120ml 2,4-D plus dicamba/10L or 60ml Tordon BK/10L).
Caution: when using any herbicide or pesticide PLEASE READ THE LABEL THOROUGHLY to ensure that all instructions and safety requirements are followed.