Yellow or Italian jasmine (Jasminum humile) could become a major threat to the Park. This scrambling shrub can grow up to 2.5 m tall and has yellow trumpet-shaped flowers up to 2 cm long. Yellow Jasmine forms dense thickets, preventing the establishment of native plant seedlings. The fruit is spread by birds, or by dumped vegetation.
It seems to thrive in fertile limestone soils and is already wall-to-wall on open sites in Golden Bay, including Pohara. It is also widely spread on the sheer cliff faces of Gorge Creek.
We suspect that the plant is moving into the Park, beyond its traditional range on limestone country, with reports of it on Pigeon Saddle and in the Wainui catchment. If you see this plant, please let us know.