Himalayacalamus cupreus

Himalayacalamus cupreus is an evergreen bamboo from Nepal. It belongs to Poaceae, the grass family. Kew places it in the temperate climate zone. In its native range, it grows in cool broad-leaved forests. These forests lie at elevations of 7,546–9,186 feet [2,300–2,800 metres]. Its leaves stay on the plant throughout the year. The RHS confirms that it is not native to Britain or Ireland.

Plants For A Future gives its height as about 20 feet [6 metres]. It also describes the plant as fast-growing. Its large culms have long internodes, the spaces between stem joints. These traits make the stems useful for weaving. The supplied sources give no mature width for this species. They also give no species-level details about leaf shape or stem colour. Its flowers have both male and female organs. Wind carries the pollen, but the sources give no flowering season.

This bamboo can grow in light shade or full sun. Plants For A Future lists it for woodland gardens and shaded edges. It prefers moist soil and accepts sand, loam, or clay. It also accepts mildly acid, neutral, and mildly alkaline ground. The plant tolerates frost within its native range. Yet the source says its success in British gardens remains uncertain. It suggests that milder parts of Britain may suit it. No firm hardiness zone is supplied. The same source reports resistance to honey fungus.

People cook the stems for food and also eat the shoots. Plants For A Future describes the shoots as good to eat. In Nepal, harvest limits help preserve stems for weaving. Workers split older stems to make baskets and mats. Long spaces between joints make this bamboo valued for that work. The source lists no known medicinal use or known hazards. That does not establish safety for every person or pet. It records no weed potential for the species.

Propagation is possible from seed or by spring division. Seed is scarce and may take one to eight months to sprout. Plants For A Future advises surface sowing under glass and keeping compost moist. Young seedlings need light shade while they grow large enough for planting. For division, it recommends pieces with at least three canes. It also advises limiting damage to the parent plant's roots.