See the distribution map (when page opens, just click on the green ‘search’ button without changing any of the settings)
Buddleia (Buddleja davidii) is a deciduous (occasionally semi-evergreen) open, multi-stemmed shrub to 3+ m tall. Stems are bluntly angled, clad in tufts of easily-removed soft woolly hair (downy hairs when young), and become lax when long. Thin, willow-shaped leaves are usually hairless above, white or hairy grey underneath, and finely toothed. In December to February, dense, cone-shaped hanging clusters made up of many fragrant purple or white flowers 5mm in diameter with orange insides are followed by 5-10mm long seed capsules.
Buddleia establishes and grows quickly, and forms self-replacing thickets. In riverbeds it can alter water flow, causing silt buildup and flooding. Extremely versatile, it tolerates a wide range of (especially poor) soils, hot to cold (likes frost), wet to moderately dry conditions, deep shade or open areas, damage, and wind.