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Congea tomentosa
''Congea tomentosa'' is a large tropical evergreen vine, commonly referred to as Wooly Congea, Shower Orchid, or Shower of Orchid. (Despite the name, it is not closely related to orchids). It is called ''lluvia de orquideas'' or ''terciopelo'' in Spanish, ''krua on'' in Thai, and ''rong bao teng'' in Chinese. Native to Myanmar and Thailand, it can be found elsewhere in South Asia, including Laos, Vietnam, Malaysia (Kedah), China (Yunnan), Bangladesh, and India (Assam, Manipur, Tamil Nadu, and West Bengal). Its native habitat is mixed forests 600–1200 meters above sea level.〔(Kew World Checklist of Selected Plant Families )〕〔(Flora of China Vol. 17 Page 49 绒苞藤 rong bao teng ''Congea tomentosa'' Roxburgh, Pl. Coromandel. 3: 90. 1820. )〕
This tropical vine has been naturalized elsewhere, including the islands of the Caribbean, southern Florida, and southern California. In the United States, Wooly Congea can be grown outdoors in USDA zones 10 and 11. It does not tolerate frost.
The plant can grow to 3–5 meters (10–16 feet) in cultivation and even larger in its native state. The stems, leaves and bracts are covered with fine, downy hairs. The leaves are light green in color, 6-8 inches (15.2-20.3 centimeters) long, and quite attractive. They are evergreen with prominent veins and are arranged in opposite pairs. The actual flowers are tiny and inconspicuous, but they are borne in the center of three showy white or violet 1 inch (2.5 centimeter) long bracts that look like velvety propellers. Wooly Congea blooms in late winter to spring. From late winter to spring it produces sprays of white flowers backed by bracts. The bracts gradually change through pink, lavender, and finally gray over the course of several weeks.
==Cultivation==
It can be grown as a trailing or climbing vine, or pruned as a shrub. In frost-prone climates, it is grown in a warm greenhouse or conservatory. One should use a soil-based potting compost, provide maximum light but shade from direct sun, provide supports for the stems, and prune after flowering to contain the plant. Outdoors, it should be grown in moisture-retentive, fertile soil in full sun. It can be propagated from seed or semi-ripe cuttings and provided with bottom heat for both. Wooly Congea is easy to grow in almost any soil type. It should be watered regularly.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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