Periwinkle is a rapidly growing, perennial, scrambling ground
cover weed. It forms rhizomes and long trailing stems that root
where they touch the ground. This is a very difficult weed to
get rid of. Cut down periwinkle and immediately apply INVADE GEL
to all cut ends to kill root systems effectively. Small patches
can be dug out but ensure all roots are removed as these will
re-sprout. Dispose of plant material at a refuse transfer
station or burn. Check for regrowth. Periwinkle rarely produces
seeds in New Zealand but is easily spread by vegetative
reproduction where small pieces will readily root and grow. The
species of periwinkle common in New Zealand are: Vinca or
European periwinkles