Cardiocrinum giganteum is a bulbous perennial that sends up tall flowering stems to about 1.8 m and produces fragrant summer blooms in July and August. Native from the Himalayas through China to Myanmar, it suits a sheltered position. It prefers moist but well-drained soils — sandy, loamy or clay — across acidic to alkaline pH, and will grow in partial shade or full sun. It is grown principally as an ornamental and for use as a cut flower.

Giant Himalayan lily Cardiocrinum giganteum produces tall, fragrant summer blooms in July and August and suits sheltered, moist but well-drained sites.

https://en.wikipedia.org/wiki/Cardiocrinum_giganteum

Cardiocrinum is a genus of bulbous plants of the lily family first described in 1846. They are native to the Himalaya, China, the Russian Far East, and Japan.

Cardiocrinum giganteum

Giant Himalayan lily | Cardiocrinum giganteum

Cardiocrinum giganteum var. yunnanense is a perennial bulbous plant that produces tall stems to about 1.8 metres and bears fragrant flowers. Flowering occurs in July to August. It favours partial shade and needs moist but well-drained soil. The variety is winter-hardy to H6 and also corresponds to USDA zones 6–9.

Cardiocrinum giganteum var. yunnanense produces stems to 1.8 m with fragrant flowers in July to August and prefers partial shade in moist, well-drained.