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''Iris laevigata'', known as Japanese iris, rabbit-ear iris or ''kakitsubata'', is a Japanese species of iris related to other members of ''Iris'' subgenus Limniris, including other species of Japanese irises. It is found growing in shallow waters and seems to prefer marshy and still ponds although it can also be grown in damp soil if conditions are right. Flowers are usually blue, purple or violet and have unique colour patterns including some types with predominantly white flowers with blue spots, called ''Washino-o'' and dark purples bordered with white, called ''Maikujaku''. Alternative names for ''I. laeviegata'' are ''I. albopurpurea'' and ''I. phragmitetorum''. It is sometimes known commonly as Shallow-flowered iris or ''yan zi hua''. ==Cultivation== ''I. laevigata'' differs from the Japanese iris mainly in being more dependent on water and in lacking the strong midrib of the foliage. When grown from seeds, they usually germinate in 30–545 days although even under good conditions germination may be erratic. Seeds should be sown about 6 mm deep in a peaty seed sowing mix at about 15-20°C with frequent watering. Some varieties are almost ever-blooming even in mild climates, which makes it a good candidate for water gardens in temperate areas in Europe and the Americas. This plant has been cultivated in Japan for more than a thousand years and some varieties mentioned in Japanese gardening books in the late 17th century are still in existence.〔(【引用サイトリンク】 url = http://www.amazon.co.uk/exec/obidos/ASIN/1561585602 )〕 The variegated cultivar ''I. laevigata'' 'Variegata'〔(【引用サイトリンク】url=http://apps.rhs.org.uk/plantselector/plant?plantid=5523 )〕 has gained the Royal Horticultural Society's Award of Garden Merit. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Iris laevigata」の詳細全文を読む スポンサード リンク
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