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American alumroot
Also known as: Alum root, Woodland alumroot
American alumroot (Heuchera americana) is a small, rosette-shaped plant with that grows best in rich, moist wooded areas. The species' leaves are high in tannins, making it resistant to deer and other herbivores. It is also fairly drought tolerant and does well even in the shade. For these reasons, the plant is a popular ornamental groundcover species, particularly in the eastern and southern U.S.
Scientific classification
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Perennial
Lifespan
Herb
Plant Type
Mid spring, Late spring, Early summer
Bloom Time
Summer
Harvest Time
22 cm
Plant Height
40 cm
Spread
Green, Brown, Red, Silver
Leaf Color
0.9 mm to 4 mm
Flower Size
Evergreen
Leaf type
5 - 35 ℃
Ideal Temperature
Spring, Summer
Growth Season

Images of American alumroot

Distribution of American alumroot

Distribution Map
American alumroot is a plant species native to the eastern regions of North America. It has been introduced to other areas including parts of Eurasia. American alumroot is adaptable and has become established beyond its natural range primarily through cultivation in gardens and landscapes.
Native
Cultivated
Invasive
Introduced
No species reported
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Habitat
Loamy woods, shady calcareous slopes and rocks
Hemisphere Trend Curve

Culture

Garden Use
Gardeners prize the american alumroot as a showy ornamental plant in shady rock gardens and wild native gardens. It’s quite attractive to butterflies, hummingbirds, and bees, making it popular in pollinator gardens as well. You can use this plant along walkways, gazebos, or patios, where it provides an attractive pop of color.
Symbolism
Protection
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Quickly Identify American alumroot

1
Heart-shaped leaves with 7-9 shallow lobes and toothed edges, 3-4 inches (7.5-10 cm) wide.
2
Bell-shaped flowers in greenish-purple hues with orange anthers, on 1-2 feet (30-60 cm) tall stalks.
3
Small, dry capsules with numerous seeds, ripe capsules around 1/5 inch (5mm) long, transitioning from green to brown.
4
Mounded habit reaching 12-18 inches (30-45 cm) in height, spreading up to 24 inches (60 cm).
5
Distinctive vein pattern radiating from central point on smooth, glossy leaves of varying green intensity.
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Care Guide for American alumroot

Every week
Water
Partial sun
Sunlight
5 - 35 ℃
Ideal Temperature
Garden Soil
Soil Type
Water: American alumroot, native to North America's rocky woods, prefers moderate moisture with good drainage and consistent watering weekly. While moderately drought-tolerant when established, it thrives outdoors in cooler environments that support natural rainfall and seasonal temperature variations.
Fertilize: For american alumroot, apply balanced fertilizers like a 10-10-10 mix once at the growing season's start and again mid-summer, using about a tablespoon for outdoor plants. Withhold feeding during winter dormancy and choose gradual-release options to prevent over-fertilization, ensuring moist soil prior to application.
Pruning: American alumroot features attractive foliage and delicate flowers. Prune in early to late spring to remove dead leaves and spent stalks, promoting new growth and controlling size. This practice maintains vigor and aesthetics, while timely removal of old stems prevents congestion, ensuring flourishing throughout the season.
Propagation: American alumroot is propagated through division by separating clumped roots while ensuring healthy roots and shoots. Replanting in well-draining soil and careful watering promotes strong growth. This method rejuvenates old clumps and enhances american alumroot's beauty in the garden.
Repotting: Repot the non-climbing, mound-shaped american alumroot every 2-3 years in Spring to support growth in a larger pot. Use well-draining soil and maintain moderate moisture, avoiding root rot. No special post-transplant care is required, but monitor soil dryness.
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