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Colchicum speciosum

Colchicum speciosum
Giant Meadow Saffron, Autumn crocus

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A vigorous autumn perennial bearing large bright pink-purple flowers with a wide white heart.
Flower size
8 cm
Height at maturity
20 cm
Spread at maturity
10 cm
Exposure
Sun
Hardiness
Hardy down to -23°C
Soil moisture
Moist soil
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Best planting time July to August
Recommended planting time July to August
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Flowering time October
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Description

Colchicum speciosum, native to the Caucasus, northeastern Turkey, and Iran, is a vigorous perennial plant. In October, one to three large thick flowers appear in shades of deep pink with a wide white heart. Its flowers are not affected by bad weather.

 

This colchicum is a fairly common species, it is the hardiest and one of the most beautiful. Its tulip-shaped flowers measure up to 8cm (3in) in diameter. When fully mature, the perennial reaches a height of 20cm (8in). It has narrow green foliage that can reach 25cm (10in) in length. The leaves are elliptical in shape. The flowers develop before the leaves.

Colchicum speciosum can be used in rockeries, light woodlands, and lawns. It also works well in pots or even in bouquets. All parts of the colchicum are toxic. Each bulb produces several flowers.

Colchicum speciosum in pictures

Colchicum speciosum (Flowering) Flowering

Plant habit

Height at maturity 20 cm
Spread at maturity 10 cm
Growth rate normal

Flowering

Flower colour pink
Flowering time October
Flower size 8 cm
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Safety measures

Potential risks Plant may be toxic if swallowed

Botanical data

Genus

Colchicum

Species

speciosum

Family

Colchicaceae

Other common names

Giant Meadow Saffron, Autumn crocus

Botanical synonyms

Colchicum bornmuelleri, Colchicum speciosum var. bornmuelleri

Origin

Cultivar or hybrid

Product reference814621

Other Colchicum

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Planting and care

Plant Colchicum speciosum in full sun in deep, fertile and well-drained soil that is not too dry. Plant at a depth of 15cm (6in). Space them 10 to 15cm (4 to 6in) apart. They will establish quickly. Plant colchicums in July-August so they can flower in the first year of planting. After planting, leave them in place as they don't like to be disturbed. Colchicums will bloom in October. After flowering, they go dormant until spring and their leaves will bloom in May and completely disappear in June.

Planting period

Best planting time July to August
Recommended planting time July to August
Planting depth 15 cm

Intended location

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

Care

Pruning No pruning necessary
Soil moisture Moist soil
Overwinter Can be left in the ground

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