Fritillaria verticillata

Fritillaria verticillata, the whorled fritillary, belongs to the lily family. This bulbous perennial grows in temperate parts of Asia. Kew and the RHS place its range from southern Siberia to Japan. Plants For A Future lists Kazakhstan and northwestern Xinjiang, China. Its habitats include dry, stony slopes, hill thickets, and gravelly meadows.

The plant forms clumps with upright stems and deciduous leaves. Garden plants reach about 1.6–3.3 feet (0.5–1 metre) tall. The RHS description gives about 3 feet (0.9 metres). Its listed spread reaches just 0.3 feet (0.1 metre). Narrow, grey-green leaves grow in whorls around the stems. Loose flower spikes carry as many as 15 blooms. Each flower hangs down and has a bell shape. Flowers range from white to a pale green tint. Green or brown checks mark their surface.

Grow this fritillary in sun or partial shade. It needs soil that lets excess water drain away. Avoid sites that stay too wet through winter. The RHS lists chalk, loam, and sand as suitable soils. It accepts acid, neutral, and alkaline conditions. Both open and sheltered sites can suit it. The RHS gives it a UK hardiness rating of H4. Plants For A Future lists USDA zones 4–8. Plants take two to five years to reach full size.

Its upright form suits beds, borders, and small garden spaces. The RHS also suggests rock gardens, gravel gardens, and containers. Plants For A Future places it along sunny woodland edges. Dappled shade is another listed setting. Divide the small offset bulbs in late summer to propagate it. It needs no pruning. Slugs and lily beetles may attack the plant. The RHS reports few disease problems.

Food and safety accounts differ, so treat it with care. Plants For A Future records cooked or candied bulbs as food. It also lists cooked young growth, petals, and flower buds. Harvesting young growth can weaken or kill the bulb. The RHS warns against eating these ornamental bulbs. Its warning covers both people and pets. Wear gloves and other protective gear when handling them. Plants For A Future also records medicinal uses for the bulbs. These include use for coughs and other chest complaints. Such records do not establish safe use at home. That source warns that excessive doses can impair breathing and cause heart failure. It says medicinal use requires a qualified practitioner's supervision.