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Allium rosenbachianum

Allium rosenbachianum
Ornamental Onion, Flowering Garlic

4,7/5
6 reviews
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Perfect. Very good quality and resilience: they are still here two years later.

Boris, 28/02/2024

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This plant carries a 6 months recovery warranty

More information

Value-for-money
An ornamental garlic with pink-purple flowers arranged in umbels and perched on tall stems.
Flower size
10 cm
Height at maturity
1 m
Spread at maturity
10 cm
Exposure
Sun, Partial shade
Hardiness
Hardy down to -23°C
Soil moisture
Moist soil
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Best planting time September to November
Recommended planting time September to November
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Flowering time May to June
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Description

Allium rosenbachianum is a tall species with stems often exceeding 1m (3ft) in height, topped with bright pinkish-mauve flowers, arranged in umbels of approximately 10cm (4in) in diameter.

These bulbous plants have excellent longevity and should be considered as entire perennial plants. They are essential, just like grasses, in flower beds or rock gardens for the light and transparent effect they bring.

 

Allium rosenbachianum in pictures

Allium rosenbachianum (Flowering) Flowering
Allium rosenbachianum (Plant habit) Plant habit

Plant habit

Height at maturity 1 m
Spread at maturity 10 cm
Growth rate normal

Flowering

Flower colour pink
Flowering time May to June
Flower size 10 cm
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Botanical data

Genus

Allium

Species

rosenbachianum

Family

Alliaceae - Liliaceae

Other common names

Ornamental Onion, Flowering Garlic

Origin

Cultivar or hybrid

Planting and care

This plant likes light, well-drained soils, even dry, stony and chalky ones, in full sun.

Planting period

Best planting time September to November
Recommended planting time September to November

Intended location

Type of use Border
Hardiness Hardy down to -23°C (USDA zone 6a) Show map
Ease of cultivation Amateur
Planting density 5 per m2
Exposure Sun, Partial shade
Soil pH Any
Soil moisture Moist soil, well-drained

Care

Soil moisture Moist soil
Disease resistance Very good
Overwinter Can be left in the ground
4,7/5
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