Buddleja davidii 'Monum' = Nanho Purple
Nanho Purple, Longstock Park, UK
|Cultivar||'Monum' = Nanho Purple|
|Origin||Monrovia Nursery, California, USA|
Buddleja davidii 'Monum' (selling name Nanho Purple) is a hybrid cultivar derived from a crossing of var. nanhoensis and 'Royal Red' back-crossed with 'Royal Red'  by the wholesale Monrovia Nursery , California, in 1980. The shrub was accorded the RHS Award of Garden Merit (record 684) in 2002. 
Nanho Purple is a very vigorous and free-flowering shrub, growing to a height and spread of 1 × 2 m, and bears narrow terminal panicles, average size 23 × 6 cm of rich purple - violet flowers with orange eyes; the willow-like sea-green leaves are comparatively small and narrow, < 2.5 cm in width.
- Petite Plum
- Bean, W. J. (1914). Trees and shrubs hardy in the British Isles. Eighth edition, revised by D. L. Clarke, 1989. Vol. 1, A-C. Murray, London.
- Stuart, D. D. (2006). Buddlejas. RHS Plant Collector Guide. Timber Press, Oregon. ISBN 978-0-88192-688-0
- Royal Horticultural Society. (2010). Trials Report 2008 - 2010 Buddleja davidii and its close hybrids. RHS, Wisley, UK.
- Dendroflora No.17, (1980) p. 46.
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