This genus of around 45 species of corms is found from eastern Europe to northern Africa and eastwards to China. Although not related to the true crocuses, the common name of autumn crocus is an apt description of the habit and appearance of many of the species. The plants are dormant and leafless in summer. Their flowers have 6 petals, usually in 2 whorls, and start to appear from early autumn before the foliage develops. Double-flowered forms are available. This genus is famous as the source of the cancer treatment drug colchicine, a mutagen that affects cell division; it is sometimes used by plant breeders to produce new cultivars.
CULTIVATION
Hardy and adaptable plants that are great favorites with enthusiasts of rockery gardens, Colchicum species thrive in zones that have 4 distrinct seasons. Some species require a hot dry summer to flower well, but most plants are happy in any fertile well-drained soil in either full or half sun. They also do well in containers.
Top Tip
Take care when handling Colchicum plants. Although the flowers are pretty, all parts of the plant are poisonous and can irriate the skin and eyes.
CULTIVATION
Hardy and adaptable plants that are great favorites with enthusiasts of rockery gardens, Colchicum species thrive in zones that have 4 distrinct seasons. Some species require a hot dry summer to flower well, but most plants are happy in any fertile well-drained soil in either full or half sun. They also do well in containers.
Top Tip
Take care when handling Colchicum plants. Although the flowers are pretty, all parts of the plant are poisonous and can irriate the skin and eyes.
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