Delphinium cashmerianum

Delphinium cashmerianum is a perennial in the buttercup family, Ranunculaceae. Gardeners also know it as Cashmire larkspur. Its native range runs from northeast Pakistan through the Himalaya to Tibet. It grows in cold subalpine or subarctic climates. Wild plants occur in alpine sites at 9,840–15,750 feet [3,000–4,800 metres]. It is not native to Britain or Ireland.

In gardens, plants reach about 1.6 feet [0.5 metres] tall. Their spread is about 1 foot [0.3 metres]. This small perennial suits planted beds and rock gardens. Flowers appear in June and July. Each flower has both male and female organs. Seeds ripen in July and August, following the flowering season. The supplied species accounts give no flower colour or leaf details.

Choose a sunny, open site with rich soil. The soil should drain well but stay moist through summer. This plant cannot grow in shade and dislikes waterlogged ground. Heavy soil can lead to plant loss over winter. Sandy, loamy and clay soils can all support growth if drainage allows. It accepts mildly acid, neutral and mildly alkaline soil. Plants can withstand cold down to about -4°F [-20°C]. The listed USDA hardiness range is zones 4–8. Its demand for resources can hinder nearby plants, including legumes.

Seeds, division and basal cuttings offer ways to raise new plants. Sow seed in a cold frame during March or April. Outdoor sowing is another option in May. Keep the seed moist and shaded until it sprouts. Germination takes two to nine weeks at 59°F [15°C]. Warmer conditions can hinder germination, and stored seed loses viability. Keep stored seed sealed at about 37°F [3°C]. Move seedlings into separate pots once large enough to handle. Plant them in their final sites during summer. Take basal cuttings in April or May, before their bases become hollow. Divide plants in spring or early autumn.

All parts are poisonous, with young plants posing the greatest hazard. The source gives it no food-use rating and lists no clear edible use. A report mentions medicinal use of the roots but gives no details. That report does not establish a safe home treatment. Plants For A Future does not flag this species as weedy. The supplied evidence names no pests or diseases for this species.