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Island Alum Root

Heuchera maxima

Island Alum Root is a robust and attractive perennial that thrives in the dappled light of woodland settings. It features large, rounded leaves that form an impressive basal clump, providing a lush, green backdrop throughout the year. In late winter to early spring, it sends up tall spikes of creamy white flowers that rise above the foliage, creating an elegant display that can reach up to 3 feet in height. These flowers are a favorite among hummingbirds and provide a delicate contrast to the bold foliage. Ideal for mass plantings or as an accent in a shaded border, island alumroot is a durable choice for low-maintenance gardens.

Details

Height24” - 36”
Spread24"
Bloom SeasonFebruary – May
Soil Types
loamLoam
sandSand
Soil Moisture
dryDry
mediumMedium
Sun Exposure
fullShadeFull Shade
partSunPart Sun

Range Map

Available
Not available

Ecological Benefits

Maintenance Tips

  • Prefers regular watering to maintain consistently moist soil, especially during dry periods.
  • Thrives in rich, well-drained soil; mulch around the base to retain moisture and suppress weeds.
  • Divide in early spring every few years to rejuvenate growth and manage plant size.
  • Provide some protection from the hottest midday sun to prevent leaf scorch, and check periodically for pests such as aphids or fungal diseases like rust.

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