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Buddleja officinalis B. officinalis with Red Admiral. Scientific classification Kingdom: Plantae (unranked): Angiosperms (unranked): Eudicots (unranked): Asterids Order: Lamiales Family: Scrophulariaceae Genus: Buddleja Species: B. officinalis Binomial name Buddleja officinalis Maxim. Buddleja officinalis is a deciduous early-spring flowering shrub native to west Hubei, Sichuan, and Yunnan provinces in China [1]: it was introduced to western cultivation in 1908.[2] In the UK it is often grown as a nectar source for vanessid butterflies such as the Peacock which have emerged from hibernation.[3] Contents 1 Description 2 Cultivation 3 Suppliers 4 References Description B. officinalis largely resembles the commoner B. davidii in shape and size, growing to < 2.5 m in height. The honey-scented mauve inflorescences are shorter (< 8 cm) than those of davidii, and more conical. The leaves are lanceolate, < 15 cm long, softly pubescent and rich green in colour (grey underneath).[1] Cultivation The shrub is not fully frost hardy, able to survive temperatures no lower than - 10 C., and is best grown against a south-facing wall.[1] The shrub should be cut back hard each year immediately after flowering in spring. Propagation by softwood cuttings is easily accomplished, using pure vermiculite as a rooting medium. Suppliers B. officinalis is in commerce in Europe. UK nurseries stocking the plant can be found in the RHS Plantfinder [1]. References ^ a b c Phillips, R. & Rix, M. (1989). Shrubs. Pan Books, London. ISBN 0 330 30258 2 ^ Hillier & Sons. (1977). Hilliers' Manual of Trees and Shrubs, 4th Edition. David & Charles, Newton Abbot, England. ISBN 0 7153 7460 5 ^ Brookes, A. H. (2007). Winter flowering buddlejas. Plant Heritage: Hampshire and Isle of Wight Group, Spring 2007.. Plant Heritage, UK. Leeuwenberg, A. J. M. (1979) The Loganiaceae of Africa XVIII Buddleja L. II, Revision of the African & Asiatic species. H. Veenman & Zonen B. V., Wageningen, Netherlands. This Scrophulariaceae article is a stub. You can help Wikipedia by expanding it.v · d · e