tree onion

Also known as: Egyptian onion

Bulbous perennial reaching up to 1.5 tall, often cultivated as an annual vegetable with thick, cylindrical grey-green edible leaves. The flower stems produces small greenish flowers and small edible bulbs

Scientific classification

Species: tree onion (Allium × proliferum)
Genus: Allium
Family: Amaryllidaceae

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Toxicity: Bulbs · Herbs - Culinary
Plant type: 1-1.5 metres
Height: 0.1-0.5 metres
Spread: Deciduous
Foliage: Clump forming
Habit: Spring · Summer
Season of interest: Full sun
Sunlight: Information to be completed
Ideal temperature

tree onion pictures

Distribution of tree onion

Distribution map

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Culture

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Toxicity

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Quick identification of tree onion

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tree onion care guide

Regular watering spring growth, reduce irrigation autumn leaf dieback
Watering: Full sun
Sunlight: Information to be completed
Ideal temperature

Watering

Regular watering spring growth, reduce irrigation autumn leaf dieback

Fertilizing

Weak bulb liquid feed applied once before spring leaf emergence phase

Pruning

Remove bulbils from the top of the flower stem for culinary porposes and to reduce spread around the garden. Prune back once the foliage has died down

Propagation

Propagate by planting sets of bulbils in the autumn or in spring

Growing

Grow in fertile, moisture retentive, but well-drained soil in full sun. Consider liming if the soil is acid, pH below 6.5. Harvest as spring onions in spring or let to gow into shallot-size onions. Prone to spreading if bulbils not removed

More growing and care information →