Alnus incana ssp. rugosa
Speckled Alder
Other Common Names: Smooth Alder, Hazel Alder

Previously known as:  Alnus rugosa
 Family:
 Genus:
 Plant Type:
 Growth Forms:
 Hardiness:
 Flower Notes:
Flowers are monoecious, appearing in catkins in March-early April before the leaves emerge.
 Foliage Notes:
Dull green leaves with wrinkled surfaces and red-hairy undersides are wedge-shaped at the base and pointed at the tip with doubly serrate margins.
 Stem Notes:
White warty lenticils speckle the bark.
 Fruit Notes:
Female catkins are followed by 1-inch long fruiting cones composed of winged seeds. These fruiting cones persist into winter, resemble small pine cones, and are attractive to birds.
 Ultimate Height:
15-25' feet
 Ultimate Spread:
15-25' feet
 Bloom Times:
 Light Requirements:
 Soil Water Requirements:
 Soil Notes:
Best grown in medium to wet soils. Tolerates mucky soils.
 Range:
Native to Canada and northeastern United States.
 Maintenance:
 Ecological Functions:
  Special Characteristics:
  • Insignificant Flowering 21
  • Tolerant of Poor Site Conditions 192
  • Wet Soil Tolerant 113

    • Other plants like this Alnus incana ssp. rugosa (Speckled Alder)

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