Muehlenbeckia

Few species are at all hardy in Britain and Ireland. M. complexa is rapidly becoming established in the wild in south-eastern Ireland and along parts of the south coast of England. At least in such areas, it would be wise not to plant the species in gardens as they will be bird-sown in the vicinity and can harm local biodiversity by smothering native vegetation (although birds eat the berries and nest in the dense, wiry growth). In its native New Zealand, it supports many native insects, from aphids to butterflies, but that is half a world away...! A second shrubby species M. astonii would be more desirable to cultivate as it has not been reported outside of gardens, and as a native plant there are fewer than 3000 individuals wild in New Zealand.