Heuchera maxima - Island alum root

Island alum root (Heuchera maxima) is an evergreen perennial endemic to California’s Channel Islands, grown as a shade groundcover under oaks for its spikes of small pink flowers. It grows 0.5-1 m tall and 0.5-0.7 m wide.¹

Inputs

• Hardiness zone 8¹
• Hardiness zone 9¹
• Hardiness zone 10¹
• Semi-shade¹
• Full shade¹

Type

• Herb
• Perennial
• Evergreen

Functions

• Fire resistance²
• Drought-tolerance¹
• Ground cover¹

Dimension	At maturity
Height (m)	0.5-1
Diameter (m)	0.5-0.7

Footnotes

1. Heuchera maxima, Island Alum Root | Las Pilitas Nursery Native Plant Database ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸

2. Leaf burn times of California native plants, Las Pilitas Nursery, 2005 propane-torch ignition trial, live-leaf ignition time >60 seconds ↩