Allium rosenbachianum Tweet

Genus: Allium

Common Name: Ornamental Onion

Latin Name: Allium rosenbachianum

Variety: rosenbachianum

Family Name: Alliaceae

Plant Description:

This bulb has long, blue-green leaves. In summer Allium rosenbachianum produces clusters of purple flowers grouped in a globe shape, (7-12 cm diameter) on the end of the tall, slender 60-90 cm long flower stalks. They are excellent as cut flowers, and dry flower arrangements plus the seed heads last a long time when dried. From Turkestan

Latin Name Explanation:

Allium means Garlic

Preferred Aspect: Sun (partial shade)

Height: 100cm

Spread: 10cm

Form: Deciduous

Hardiness: Frost Hardy - withstand temperature down to -5C

Grown Height: 100cm

Grown Spread: 10cm

Leaf Type: Deciduous

Likes Soil Type:

Does not thrive in Soil Type:

Hardiness: Frost Hardy - withstand temperature down to -5C

Preferred Aspect: Sun (partial shade)

Primary Flower Colour: Purple

Primary Foliage Colour: Blue Green

Jan

Feb

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Apr

May

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Nov

Dec

Period of Interest

Planting Period

Pruning Period

Element of Interest:

Attracts Butterflies


Likes PH: Slightly Acid - Neutral - Slightly Alkaline

Does not thrive in PH:

Moisture Level: Well drained soil

Growth Rate: Grows and dies back in the same year (herbaceous)

After Care Required: Mulch with Organic Matter


Work Involved: Can Withstand Neglect

Fragrance: Slightly Scented

Suitable for Small Garden:

Does it need staking?:

Plant for RHS Identification Course:

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Specific Planting:

Plant the bulbs in autumn, 5-7.5 cm deep (3 inches), in groups 20cm apart.

Specific Care:

Specific Feeding:

Propagation

From Seed

There are more plants of the same Genus. If you would like to see them all please press 'Show All' button.

Allium ascalonicum syn. Allium cepa var Aggretum Allium carinatum ssp. pulchellum Allium cepa Allium cepa var aggregatum 'Picasso' Allium cepa var. aggregatum 'Picasso' Allium cepa (Spring onion) Allium cepa 'Carmen' Allium cepa 'Sturon' Allium cepa 'White Lisbon' (Spring onion) Allium cernuum

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