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red alder | Plant Finder | Fill My Garden

Home/Plants/Trees

Plants > Trees

red alder

Alnus rubra

Low Maintenance

Genus: Alnus
Family: Betulaceae
Common Names: Californian red alder, Oregon alder, tag alder

About this plant

A medium-sized tree, to around 19m, fast-growing with a graceful habit, producing a narrow pyramidal head with rather pendulous branches. Leaves large, lobed, dark green above, greyish beneath. Long male catkins to 15cm. Fruits barrel-shaped, to 1.5cm long

Growing Information

Height

Higher Than 12 Metres

Spread

4-8 Metres

Hardiness

Foliage

Deciduous

Growing Conditions

Sunlight

Full Sun

Soil

ClayChalkLoamSandy

AcidAlkaline

Not Currently Available

This plant is not currently stocked at any garden centres on our platform.

Neutral

Moisture

Poorly Drained

Aspect

East FacingWest FacingSouth Facing

Exposure

ShelteredExposed

Care Guide

Cultivation

Thrives in moderately fertile, moist but well drained soil in full sun

Pruning

Requires minimal pruning

Propagation

Propagate by seed in a seedbed as soon as ripe. Root hardwood cuttings in winter and softwood cuttings in summer. Bud grafting can be performed in late summer

Pests

Generally trouble free

Diseases

Prone to Phytophthora root rot

Garden Uses

Uses

City CourtyardBanks Slopes

Planting Places

Borders

Season of Interest

SpringSummerAutumn

Size & Characteristics

Height

Higher Than 12 Metres

Spread

4-8 Metres

Habit

Climbing

Time to Full Height

Fifty To Hundred Years