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Roscoea purpurea
Roscoea purpurea is a hardy Himalayan ginger that dies back to tuberous roots each year and emerges late in spring. It is grown for its large purple to mauve flowers, and the key to growing it is a sunny to partly shaded spot with moist but well-drained soil.
Roscoea purpurea is a perennial herbaceous plant occurring in the Himalayas, particularly Nepal. Most members of the ginger family (Zingiberaceae), to which it belongs, are tropical, but species of Roscoea grow in much colder mountainous regions. It is sometimes grown as an ornamental plant in gardens.
Jill Cowley notes that "for many years" a different species, R. auriculata, was grown in gardens under the name R. purpurea. She provides a number of distinguishing features, which include the auriculate nature of the leaves of R. auriculata, the bright purple colour of its flowers rather than the paler colours of typical R. purpurea, the relatively shorter white lateral staminodes of R. auriculata, and the latter's deflexed (bent back) labellum.
R. purpurea like other Roscoea species and cultivars, is often grown in rock gardens. Plants generally require a relatively sunny position with moisture-retaining but well-drained soil. As they do not appear above ground until late spring or even early summer, they escape frost damage in regions where subzero temperatures occur. When grown at Royal Botanic Gardens, Kew, R. purpurea emerges from the ground only in June, flowering from late July to early September. It requires shade for part of the day.
Roscoea purpurea is native to the Himalayas, and in particular Nepal. It occurs in a range of habitats, both damp and dry. It has been found in alpine grassland, rock faces, terraced walls, clearings and woodland edges; sometimes exposed to the full sun and sometimes in the shade of other herbaceous plants, shrubs and trees.
Roscoea auriculata · Roscoea cautleoides · Roscoea forrestii · Roscoea humeana · Roscoea wardii
Text excerpted from the Wikipedia article Roscoea purpurea by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
