Scientific Name:	Alnus rubra
Pronunciation:	AL-nus ROO-bra
Common Name:	red alder
Family Name:	Betulaceae
Plant Type:	Tree - deciduous
Key ID Features:	Large red stalked buds; new stems angular; persistant woody cone; leaves have doubly serrate margins and are rolled under at the edges; male catkins are long and thin, hanging in clusters; female catkins are short and thick, held upright at the ends of branchlets.
Course(s):	AARB 1012, HORT 1155, Level 4 Apprenticeship

Habit: Stiffly upright Form: Oval - vertical Texture: Medium Mature Size: Height: 22 - 30m Spread: 7 - 10m Growth Rate: Fast Origin: B.C. west of Cascades, U.S. - northwest, U.S. - southwest Hardiness Rating: Zone 3: (-40 to -34 C) Exposure: Full sun Soil/ Growing Medium: Acidic, Humus rich, Well-drained Water Use: Moderate Landscape Uses: Erosion control, Native planting, Tall background, Wetland - bogs, Woodland margin Additional Info: Google

Leaf Morphology: Form: Simple Arrangement: Alternate Texture/ Venation: Heavily veined, Pinnate venation, Soft flexible Surfaces: Glabrous, Lustrous Colour in Fall: Yellow, Brown Leaf(let) Terms: Shapes: Ovate Apices: Acute Bases: Attenuate, Obtuse Margins: Double serrate

Inflorescence Type: Catkin (ament) Flower Morphology: Monoecious plant Number of Petals: 0 Colour (petals): Not showy, Yellow Flower Scent: None Flower Time at Peak: Mar, Apr, Aug

Fruit Type: Cone (winged seeds), Nut Fruit Colour: Brown Fruiting Time: Aug, Sep, Oct Additional Info: Not showy, Many small winged nutlets form on the cone-like female catkin axis that shatters when ripe.

Bark Morphology: Smooth, Lightly fissured, Single stem trunk Bark or Stem Colour: Grey, Brown     Leaf Bud Type: Stalked Organ Modifications: Ectomycorrhizae, Root nodules (N-fixing)

Propagation:	Seed, Greenwood cuttings, Hardwood cuttings
Plant Care:
Maintenance:	Medium
Pest Susceptibility:	Pest resistant, Disease resistant, Root rot, Galls, Fungal leaf spot, Caterpillar or cutworm, Canker or sap rot, Beetles or weevils, Sawfly or horntail

Location(s): (FSC) Far South Campus Location Map

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