American Alumroot (Heuchera americana)

American Alumroot

Heuchera americana

Delicate spires of tiny flowers rise above ruffled foliage. Herbaceous perennial; common name: American Alumroot.

Partial sun
1–2/week
Beginner
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Plant Needs

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Sunlight Bright partial sun to full shade; avoid intense midday summer sun to prevent leaf scorch
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Watering Water when the top 2–3 cm of soil feels dry; avoid overwatering to prevent root rot
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Temperature Extremely cold-hardy to -30°C; tolerates moderate summer heat with consistent soil moisture
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Characteristics

  • Leaf: Round to heart-shaped, ruffled edges, variable green to bronze-purple foliage with subtle veining
  • Flower: Tiny bell-shaped blooms in white, pale pink, or greenish-white on slender erect flowering stems
  • Stem: Wiry, thin flowering stems that rise 20–40 cm above the basal leaf clump
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Care Guide

Watering

Keep soil evenly moist but not waterlogged; mulch to retain moisture

Fertilization

Diluted balanced feed every 4 weeks. Avoid over-fertilizing to prevent leaf burn; stop feeding in late autumn

Composted banana peel tea:Steep fully composted banana peels in water for 24 hours, dilute 1:25 for root drench to support flower production
Pruning
  • Deadhead spent flower stems after blooming to maintain a neat clump appearance
  • Remove yellowing or damaged basal leaves in early spring to improve airflow
  • Divide overcrowded clumps every 3–4 years in early spring to refresh growth
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no reported toxicity symptoms

Humans: Non-toxic to humans; no known adverse health effects from ingestion or contact

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental ground cover, border plant, container foliage