Richardson’s Alumroot (Heuchera richardsonii): A Sun‑Loving Native for Dry Gardens

Most coral bells shy from full sun and drought, but Richardson’s alumroot (Heuchera richardsonii) thrives in both. This Central U.S. native forms a tidy mound of bright green foliage topped with airy panicles of creamy‑yellow flowers in late spring. At 1–2 feet tall and 1 foot wide, it’s perfect for rock gardens, prairie plantings, and sunny perennial borders.

Quick Facts

• Botanical name: Heuchera richardsonii
• Common names: Richardson’s alumroot, prairie alumroot
• Native range: British Columbia to Oklahoma, east to Ontario and Indiana
• Hardiness: USDA zones 3a–6b (–40 °F / –40 °C)
• Light: Full sun to partial shade
• Water: None needed once established
• Soil: Dry, well‑drained
• Mature size: 1–2 ft tall, 1 ft wide

Seasonal Interest & Wildlife

Blooms in late May (earlier farther south). Tiny flowers attract small sweat bees (Lasioglossum spp.) and metallic green bees (Augochlora, Augochlorella spp.). Foliage stays attractive all season.

Design Ideas

Mass in clusters for best effect. Combine with other sun‑loving, well‑drained natives like bluebell bellflower (Campanula rotundifolia), prairie phlox (Phlox pilosa), and wild lupine (Lupinus perennis).

Planting & Care

• Shallow, woody roots benefit from mulch to prevent frost heaving.
• Available as potted plants or seed from native nurseries.
• Deer resistant; rabbits may nibble flower stalks.