Alnus formosana

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A fast-growing deciduous tree to 20m. Leaves are green with an elongated shape, pink when young then shiny green until they fall in autumn. Male catkins hang in large numbers in spring and female woody 'cones' persist on the branches through the winter

Alnus formosana

Scientific classification

Species: Alnus formosana (Alnus formosana)
Genus: Alnus
Family: Betulaceae

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Toxicity: Trees
Plant type: Higher than 12 metres
Height: wider than 8 metres
Spread: Deciduous
Foliage: Columnar upright
Habit: Spring · Summer · Autumn · Winter
Season of interest: Full sun
Sunlight: Information to be completed
Ideal temperature

Alnus formosana pictures

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Distribution of Alnus formosana

Distribution map

Taiwan

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Culture

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Toxicity

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Quick identification of Alnus formosana

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Alnus formosana care guide

Moderate regular watering, avoid prolonged drought or waterlogging
Watering: Full sun
Sunlight: Information to be completed
Ideal temperature

Watering

Moderate regular watering, avoid prolonged drought or waterlogging

Fertilizing

Balanced feed in spring and light repeat in growth season

Pruning

Little pruning is needed. Remove diseased, damaged, crowded or crossing shoots and unwanted growth. Timing depends on the plant: generally late winter or early spring; plants prone to bleeding and deciduous magnolias need different timing, and deciduous azaleas and lilacs are pruned after flowering.

Propagation

Propagate by hardwood cuttings or seed. For more advice see our information on how to propagate from seed (tree/shrub

Growing

It is a nitrogen-fixer so can grow on poor soil. Suited to river banks on permanently damp soil in good light. For more information see tree cultivation.

More growing and care information →