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16245 S US Hwy 71
Belton, MO 64012
Tel: (816) 331-9738
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Heuchera richardsonii

Alum Root

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Heuchera richardsonii (Alum Root)

This native coral bells is a clump-forming perennial which is found on dry prairies, open woodland slopes, uplands, banks and along railroads. Typically features a 12-18" tall basal clump of heart-shaped, shallow-lobed, green leaves which show some white mottling or purple blush when young, maturing to a more uniform green. Tiny, greenish, bell-shaped flowers in open, airy panicles are borne on slender, wiry stems extending well above the mound of leaves, typically to a height of 18-24" in spring to early summer. Flower stems and leaf undersides are distinctively hairy.

Additional Information:

12-24 Inches


12-18 Inches


USDA Hardiness Zone 3-9

Home Owner Growing and Maintenance Tips:
Best grown in organically rich, humusy, dry to medium wet, well-drained soils in full sun to part shade. Prefers full sun in the northern part of its range, but appreciates some afternoon shade in the hot summers of the deep South. Drought tolerant. In cold winter climates, a winter mulch applied after the ground freezes will help prevent root heaving (clumps are shallow-rooted and will develop woody bases rather quickly). Divide clumps in spring every 3-4 years. Great groundcover or edge plant for open woodland, perennial border or rock garden areas.

Good Companions
Virginia Sweetspire (Itea virginica), Lanceleaf Coreopsis (Coreopsis lanceolata), Squaw-weed (Packera obovatus)

Characteristics & Attributes

Hydrologic Designation


Season of Interest

Mid (May-June)
Late (July-frost)

Soil Moisture


Special Uses

Ground Cover

Sun Exposure

Medium Sun/Average Shade

USFS MO Ecological Map