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
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
Pricing & Availability
Alnus incana ssp. rugosaAlso known as:
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".
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
Propagate from seed, or by cuttings.
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
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
|Species||Alnus incana ssp. rugosa||speckled alder|