SelecTree: Tree Detail
PYRAMIDALIS BLACK ALDER
Alnus glutinosa 'Pyramidalis'
Photo Locations: Morton Arboretum - Lisle, IL
Branches don't droop and resist breakage.
Additional Common Names
PYRAMIDALIS BLACK ALDER, PYRAMIDALIS COMMON ALDER, PYRAMIDALIS EUROPEAN ALDER
Conical or Oval Shape.
Has Deciduous foliage.
Height: 40 - 50 feet.
Width: 15 - 20 feet.
Growth Rate: 24 or More Inches per Year.
Leaves Elliptic, Green, No Change, Deciduous.
Flowers Inconspicuous. Purple or Red. Flowers in Spring. Has separate male and female flowers on the same tree (monoecious).
Persistent, Brown Cone, Small (0.25 - 0.50 inches), fruiting in Summer or Fall.
Bark Dark Gray, Fibrous.
Shading Capacity Rated as Dense to Very Dense in Leaf.
Shading Capacity Rated as Dense out of Leaf.
Tree Site Conditions & Constraints
Sunset Zones 1 - 10 and 14 - 24.
USDA Hardiness Zones 3 - 7.
Exposure Full Sun to Partial Shade.
Wet but Well Drained Soil.
Loam or Sand Texture.
Acidic to Alkaline Soil pH.
Pests & Disease Information
Susceptible to Leaf Miner and Caterpillars, Powdery Mildew and Canker.
Health, Safety & Environmental Concerns
Branch Strength Rated as Medium Weak
Root Damage Potential Rated as Low.
Special Uses & Values
Specimen, Shade Tree or Screen.
Cite this tree:
SelecTree. "Alnus glutinosa 'Pyramidalis' Tree Record." 1995-2018. Jun 23, 2018.
< https://selectree.calpoly.edu/tree-detail/alnus-glutinosa-pyramidalis >