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Alnus incana ssp. rugosa

speckled alder add to wishlist

Plant types and subtypes: Trees & Shrubs, Shrubs, Shrub-like Trees, Deciduous

Light Requirements: sun, part-sun, part-shade, shade

Water Use: medium

Soil Moisture: moist, wet

Soil Description: acid, rich, average, loam, clay, sand, gravel/rock

Height: 6'-20'

Bloom Time: March, April, May

Bloom Color: yellow, green, brown

Leaf Color: green

Hardiness Zone: 3, 4, 5, 6

Additional Tags: attracts birds, attracts butterflies, bog plant, colonizing, medicinal, naturalizing, ornamental foliage, pond margin plant, shade garden plant, stream margin plant, swamp plant, wetland plant

Alnus incana ssp. rugosa (speckled alder)
  • Alnus incana ssp. rugosa (speckled alder)
  • Alnus incana ssp. rugosa (speckled alder)

Pricing & Availability

Description

Alnus incana ssp. rugosa

Also known as:

speckled alder

,

tag alder

,

gray alder

,

hoary alder

,

hazel alder

,

swamp alder

Scientific Synonyms:

Alnus rugosa

Description

Alnus incana ssp. rugosa is a deciduous shrub, or small tree that can grow to 30' under ideal conditions. The bark is reddish- brown, with white spots that are actually spongy openings for gas exchange, hence the common name "speckled alder".

Cultivation

Alnus incana ssp. rugosa is a fast-growing species, that can be pruned to maintain a hedge form, or trimmed up to create a tree form. Individual plants are short lived, but form self-regenerating colonies by means of root suckers. It is adaptable to poor soils. a moisture loving shrub, it does well with seasonal or regular inundation, and can be used as wetland restoration and stabilization plant. Established specimens are also fairly drought tolerant. If left unmanaged, speckled alder will colonize, forming dense thickets. Blooms early spring; March to May. Zones 3-6

Propagation

Propagate from seed, or by cuttings.

Additional Notes

The roots have the ability to fix nitrogen, making it a good plant to rehabilitated depleted soils. Native Americans have used this plant medicinally to treat a wide range of ailments, from toothaches and diarrhea,as well as internal bleeding, and as an aid in childbirth.

Native Range & Classification

Recorded County Distribution: USDA data

Native Range:
CT, IA, IL, IN, MA, MD, ME, MI, MN, ND, NH, NJ, NY, OH, PA, RI, VA, VT, WI, WV

USDA Endangered Status:

  • Endangered: IL

Classification

Kingdom Plantae Plants
Subkingdom Tracheobionta Vascular plants
Superdivision Spermatophyta Seed plants
Division Magnoliophyta Flowering plants
Class Magnoliopsida Dicotyledons
Subclass Hamamelididae
Order Fagales
Family Betulaceae Birch family
Genus Alnus alder
Species Alnus incana ssp. rugosa speckled alder