Wildflower Archive

woodland wildflower

American alumroot

Heuchera americana

Also known as Alumroot

American alumroot (Heuchera americana)
Nvss132

Native to much of the USA and southern Canada

Connecticut to Ontario and Michigan, south to Georgia and Oklahoma; Eastern North America, Zones 5 to 8.

  • Light Part shade to shade Sun tolerance
  • Moisture Dry to moist Moisture preference
  • Zones 5–8 Cold to heat range
  • Bloom Mar–Aug Flowering time
  • Height
  • Life cycle Perennial Annual to perennial
Full details, see below

In the garden

A woodland wildflower for part to full shade and dry to moist soil. Hardy in USDA zones 5–8.

Growing conditions

Light
Full sun Partial shade Full shade
Moisture
Dry Moist Wet

Hardiness zones

Find your zone:

Pollinators & wildlife

  • Bees Common Eastern Bumble Bee
    also Western Honey Bee, American Bumble Bee, Ligated Furrow Bee +17 more Pure Green Sweat bee, Golden Sweat Bee, Colletes nudus, Alumroot Cellophane Bee, Experienced Sweat Bee, Maine Blueberry Bee, hoary sweat bee, Cresson's Nomad Bee, Broad-faced Masked Bee, Buff-tailed Bumble Bee, Illinois Cuckoo Sweat Bee, Lasioglossum platyparius, Early Bumble Bee, Garden Bumble Bee, Lunate Longhorn-cuckoo Bee, Colourful Willow Miner Bee, Augochlorella persimilis
  • Moths Ipsilon Dart Moth also Acontia candefacta
  • Flower flies Volucella bombylans also Hemipenthes sinuosus
  • Also visited by
    • Hummingbirds: Ruby-throated Hummingbird
    • Wasps: Fraternal Potter Wasp
    • Butterflies: Viceroy
    • Beetles: Downy Long-horned Beetle

Butterflies that use this plant

Documented host and nectar records. Each links to a planting guide for that butterfly.

Full plant details

Where it grows

Habitat
WoodlandThe wild plant community it grows in.
Native range
Much of the USA and southern CanadaUnited States (27): AL, AR, CT, DC, DE, GA, IA, IL, IN, KS, KY, LA, MD, MI, MO, MS, NC, NE, NJ, NY, OH, OK, PA, SC, TN, VA, WV. Canada (1): ON. Where it grows wild on its own, by state and province.
Native distribution
Connecticut to Ontario and Michigan, south to Georgia and Oklahoma; Eastern North America, Zones 5 to 8.The same native range, usually more exact than the state list, and often noting where it has spread beyond it.

Growing conditions

Light
Part shade to shadeHow much sun it takes, from full sun to full shade.
Moisture
Dry to moistThe soil dampness it prefers, from dry to wet.
Hardiness zones
USDA 5–8 · Canadian 6–7The cold-to-heat climate range it survives.
Soil
Well-drained, humus-rich, acid soils, sometimes rocky. Tolerates poor soil, low moisture, and limeThe soils it grows in naturally.
Soil texture
Light to medium (sandy to loamy)The soil grade it prefers, from sand to clay.
Soil pH
Mildly acid to mildly alkalineThe acidity to alkalinity it tolerates (7 is neutral).
Water use
Low to mediumHow thirsty it is, a rough guide to how often to water.

Growth & form

Spread
~1 ft (0.3 m)How wide one plant gets, a guide to spacing.
Life cycle
PerennialWhether it lives a single season (annual), two (biennial), or returns for years (perennial).
Growth rate
ModerateA relative ranking versus other plants of the same type (USDA), not an absolute rate.

Flowers, foliage & fruit

Type
WildflowerWhat kind of plant it is.
Bloom
Mar–AugWhen it flowers.
Flower color
Red, Green, Purple, BrownThe bloom color, or colors.
Toxicity
None knownWhether any part is poisonous to people or pets.