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Colchicum speciosum
Also called Giant Meadow Saffron
Showy colchicum is a bulb-like corm perennial from mountain areas of Turkey, the Caucasus and northern Iran, prized for its reddish-violet autumn flowers that appear before the leaves. Plant it in well-drained soil in sun or part shade and leave the corms undisturbed.
Colchicum speciosum is a species of flowering plant in the family Colchicaceae, native to mountainous areas of northern Turkey, the Caucasus and northern Iran. Growing to 18 cm (7 in) tall by 10 cm (4 in) wide, it is an herbaceous perennial growing from corms. C. speciosum blooms in the fall, producing reddish/violet flowers on stems up to 30 centimetres (12 in) tall without any leaves present. The strap-like leaves grow in the spring, then yellow, wither and die back as summer progresses. The flowers strongly resemble those of the crocus, the familiar spring-flowering bulb; hence the common name autumn crocus which is applied to this and other colchicum species. However the two genera belong to different families; and there is in fact an autumn-flowering crocus species, Crocus sativus, the source of the spice saffron. By contrast, all parts of Colchicum speciosum are toxic if ingested.
Colchicum speciosum is a vigorous grower and does well in full sun to partial shade and well-drained soils in most climates. It is valued in gardens for its late flowering at the end of summer and into autumn.
Cultivars include the white 'Album' and the amethyst-purple ‘Atrorubens’ which have gained the Royal Horticultural Society's Award of Garden Merit (confirmed 2017).
Alpine Autumn Crocus · Autumn crocus · White Autumn Crocus · Colchicum boissieri · Spring Meadow Saffron · False Autumn Crocus · Tenore Autumn Crocus · Colchicum davisii · Colchicum hungaricum · Colchicum kotschyi · Colchicum lingulatum · Indian Colchicum
Text excerpted from the Wikipedia article Colchicum speciosum by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
