Heuchera maxima

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Heuchera maxima
Heuchera maxima
Heuchera maxima

Species Name: Heuchera maxima
Common Name: Island Alumroot

UC Davis Arboretum All-Stars plant! One of the largest native alum roots with tall flowering stems of white and pinkish flowers. Tolerates heavy soil and moderate drought. Endangered in a portion of its range. Endemic to Channel Islands.

Plant Family: Saxifragaceae
Plant Type: Perennial
Height by Width: 2' H x 2' W
Growth Habit: Clumping rosettes
Deciduous/Evergreen: Evergreen
Growth Rate: Fast
Sun Exposure: Part shade to shade
Soil Preference: Adaptable
Water Requirements: Occasional to moderate
Cold Hardy to: Frost tender
Flower Season: Spring
Flower Color: White to pink
Endangered?: List 1B/ RED 2-2-3
Distribution: Northern Channel Islands
Natural Habitat: Cliffs and canyons

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Care and Maintenance

  • Introduced into cultivation in California by Theodore Payne.
  • From California Native Plants, Theodore Payne's 1941 catalog: "Found in canyons on Santa Cruz, Santa Rose and Anacapa Islands. Desirable for its large attractive foliage as well as for the tall slender panicles of small white flowers which are very useful for cutting, especially when used as a filler with other flowers. A good subject for a shady spot. Gallon cans, 50c."
Other Names
  • Bornstein, Carol, David Fross, and Bart O'Brien. California Native Plants for the Garden. Los Olivos, CA: Cachuma Press. 2005.