Heuchera cylindrica 'Hyperion' (alum root 'Hyperion') — perennial

Overview

Heuchera cylindrica 'Hyperion' is a perennial in the genus Heuchera, part of the Saxifragaceae family. It typically grows around 0.5 m tall. Heuchera cylindrica 'Hyperion' grows best in full sun, and tolerates sandy and loamy soils. Its UK hardiness is rated H7. It is native to Alberta and British Columbia.

About the genus

Heuchera is a genus of largely evergreen perennial plants in the family Saxifragaceae. All species are native to North America except for Heuchera sichotensis, native to the Russian Far East. Common names include alumroot and coral bells.

Wikipedia contributors, "Heuchera", CC BY-SA 4.0 — Heuchera

In the garden

Heuchera cylindrica 'Hyperion' is a perennial in the Saxifragaceae that originates from Alberta and British Columbia. The cultivar produces upright, leafless flowering stems that rise above the basal foliage and reach roughly 0.5 m overall, making the flower spikes the season’s main architectural feature. Plant 'Hyperion' in a sunny position on sandy or loamy soil that remains moist but drains freely; the specified requirement is full sun. It is rated H7 for UK hardiness (equivalent to USDA zones 4–8), so it will withstand typical British winters when sited in a free-draining spot. Avoid heavy, waterlogged ground and provide good light to support the flowering period, which runs from May to August. Use this alum root at the front of a sunny mixed border, in gravel or rock gardens where sandy or loamy substrates predominate, or anywhere a season of upright blooms is needed. The defining display comes from the flowering spikes between May and August, which form the plant’s principal seasonal interest.