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Allium cristophii

Allium christophii
Star of Persia, Persian onion, Ornamental Onion

4,8/5
72 reviews
5 reviews
5 reviews
1 reviews
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The bulbs are of good quality. Planted immediately. I'll wait until next year to have a real opinion.

Yolande, 14/12/2022

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This plant carries a 6 months recovery warranty

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A beautiful ornamental garlic. In May-June, it produces large and airy spherical umbels composed of small star-shaped purple flowers with metallic reflections. This medium-sized allium will not exceed 60cm (24in) in height when flowering. Fabulous in contemporary or natural inspired compositions, this bulbous plant is comfortable in any type of well-drained soil. It is extraordinary in dry or fresh bouquets.
Flower size
20 cm
Height at maturity
50 cm
Spread at maturity
15 cm
Exposure
Sun
Hardiness
Hardy down to -23°C
Soil moisture
Dry soil, Moist soil
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Best planting time September to October
Recommended planting time January to February, September to November
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Flowering time May to June
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Description

Allium cristophii, also known as the star of Persia, is a beautiful variety of botanical allium. In May-June, it forms large, airy spherical umbels composed of small violet star-shaped flowers with metallic reflections. This medium-sized ornamental garlic will not exceed 60cm (24in) in height when flowering. Fabulous in contemporary or natural inspired compositions alongside valerians, thistles, and grasses, this bulbous plant is comfortable in any type of soil as long as it is well-drained. Its dried flowers are extraordinary in dry or fresh bouquets.

 

Allium cristophii belongs to the Amaryllidaceae family, just like leeks, onions, and garlic in our vegetable gardens. It is native to mountainous areas in northern Iran and central Turkey. This plant has a fleshy reserve organ that multiplies by forming bulblets and shares with other members of its family a noticeable onion or garlic smell when its foliage is crushed.

Growing rapidly, it will reach 50 to 60cm (20 to 24in) in height when flowering and spreads on the ground by bulb multiplication. Flowering takes place in May-June in the form of wide and light umbels of metallic violet, averaging 20cm (8in) in diameter. Each umbel is composed of about 100 small star-shaped flowers with 6 very fine petals, carried by pedicels of varying sizes, all radiating from a central point. After pollination by insects, they produce capsules that remain decorative for a long time. The foliage consists of 4 to 6 wide basal leaves with a bluish-green shade. They are slightly villous. The foliage turns yellow and disappears at the same time as the flowering, which is a good adaptation to hot and dry summer conditions.

Use Allium cristophii as a focal point in a contemporary or country-style flower bed, especially in a dry garden. It will express its full potential in large groups of at least 10 to 15 bulbs. Plant it in a flowerbed, with white, mauve, pink, or red valerians, verbena 'Buenos Aires', and shrubby wormwoods, or as a border plant behind a row of neatly trimmed boxwood balls or germander. It also works well along a wall or pathway, or in isolated clumps amidst creeping bugleweed. No matter how you plant it, the decorative effect is guaranteed! Consider planting it in beautiful pots that will be decorative from spring to autumn. It can also be used in bouquets: to reduce the allium scent of the flowers, you can, for example, add a drop of bleach to the vase water or change the water regularly.

Allium pairs very well with roses and chamomile in flower beds, or in the vegetable garden where it will provide a few pleasant blooms that are sometimes lacking among vegetables. It can repel aphids and other harmful insects. Plant it among strawberries to protect them from fungal diseases. However, it seems to inhibit the growth of legumes. This plant is a poor companion for alfalfa and sainfoin, for example.

 

Allium cristophii in pictures

Allium cristophii (Flowering) Flowering
Allium cristophii (Plant habit) Plant habit

Plant habit

Height at maturity 50 cm
Spread at maturity 15 cm
Growth rate normal

Flowering

Flower colour violet
Flowering time May to June
Inflorescence Umbel
Flower size 20 cm
Bee-friendly Attracts pollinators
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour green
Foliage description Deciduous foliage from flowering.

Botanical data

Genus

Allium

Species

christophii

Family

Alliaceae - Liliaceae

Other common names

Star of Persia, Persian onion, Ornamental Onion

Origin

Cultivar or hybrid

Planting and care

Alliums are easy-to-grow. Plant them preferably before the end of October so that they have enough time to settle in well. They fear moisture. Offer them a sunny spot in well-drained, even rocky soil. Plant larger bulbs 10 or 15cm (4 or 6in) deep, spaced 15cm (6in) apart. Smaller bulbs should be planted 10cm (4in) deep, spaced 7cm (3in) apart. They are undemanding but do prefer poor soils.

Planting period

Best planting time September to October
Recommended planting time January to February, September to November
Planting depth 10 cm

Intended location

Suitable for Meadow, Rockery
Type of use Border, Container, Slope, Vegetable garden
Hardiness Hardy down to -23°C (USDA zone 6a) Show map
Ease of cultivation Amateur
Planting density 10 per m2
Exposure Sun
Soil pH Any
Soil moisture Dry soil, Moist soil, well-drained, light

Care

Pruning No pruning necessary
Soil moisture Dry soil, Moist soil
Disease resistance Very good
Overwinter Can be left in the ground
4,8/5

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