Description
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Cleistocactus is a genus of flowering plants in the cactus family Cactaceae, native to mountainous areas – to 3,000 m – of South America (Peru, Uruguay, Bolivia and Argentina). The name comes from the Greek kleistos meaning closed because the flowers hardly open. The stems of these cacti are tall, mostly slender and often many-branched with numerous ribs with closely set areoles and spines. The flowers are tubular and the tips hardly open with only the style and stamens usually protruding. A mix made up of 4 species. USDA Zone – 8 Season to Sow – Spring
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