|Botanical Name||Vinca major|
DescriptionDense mat of long running, hairless stems with roots at nodes. Opposite leaves oval, usually around 40 mm, usually dark glossy green, rarely variegated white and green. Flowers tubular and flat-lobed at mouth to 50 mm diameter, mauvish blue, Jan-Dec.
Where is it found?Lowland and coastal forest including pohutukawa forest, shrublands and rocklands, inshore islands and coastal areas generally, forest light gaps, alluvial flats, roadsides, quarries, wastelands, possibly exotic plantations.
Why is it a problem?Has similar properties to wandering jew in its ability to grow in shade conditions and form a thick smothering blanket. Stops regenerating forest seedlings and ground cover plant species. May spread over many square metres of forest floor. Small ground cover plant species with limited distribution growing in rocky areas and coastal or alluvial ecosystems are the species most impacted.
How does it spread?Dispersed from dumping of garden waste and may be moved overland by road machinery and soil disturbances along rivers. Produces seed.
How do I get rid of it?
Hard to kill. Hand pull as much as possible, particularly the runners. Repeat at regular intervals.
Compost, bury deeply or burn. Do not mulch.
(i) Activated Amitrole.
Rate - 2 litres Activated Amitrole/100 litres water + wetting agent (surfactant).
Rate - 300 ml in 15 litres of water plus 30 ml Pentrant.
Hand pull small infestations. Spray larger areas.