Buddleja bhutanica is a species of flowering shrub endemic to Bhutan, where it grows in bush on mountain slopes at elevations around 1,700 m.[1] The shrub was first described and named by Yamazaki in 1971.[2]
Buddleja bhutanica is a deciduous shrub 1.5 - 2 m in height, very similar to B. asiatica but distinguished by its perfoliate leaves. The branchlets are terete and glabrous, bearing opposite leaves, connate-perfoliate and narrowly oblong, 6 - 16 cm long by 3 - 8 cm wide, glabrous above and below, the margins serrate or entire. The white, very fragrant inflorescences comprise terminal panicles, 8 - 17 cm long by 3 - 8 cm wide, the corollas 4.5 - 5.5 mm long.[3]
Buddleja bhutanica is not hardy in the UK; attempts at introduction, at the Chelsea Physic Garden and the Teignmouth Orangery, both failed.Hardiness