Helping You Become a More Successful Gardener
Gerald L. Klingaman
Japanese iris originates from China, Russia, and Japan but has been cultivated most by the Japanese. It was first popularized in the West in the late nineteenth century when it was most prized as a collector's plant. Now there are hundreds of fine cultivars available of eastern and western origin.
This tall, elegant perennial may also be called the butterfly iris, a name which describes its large, flattened flowers that come in an array of cool colors. The blooms appear in late spring to early summer atop upright stems that stand above stiff strap-like leaves of rich green. It is a clump-forming perennial that may require division ever three years or so.
Japanese iris prefers full to partial sun and is best placed in moist boggy soils, though it will tolerate good garden soil that’s evenly moist and slightly acidic. It is ideal for Japanese-themed gardens, waterside plantings or any sunny mixed border. Japanese iris are also suitable as cutflowers for garden fresh arrangements.
9 - 1
3 - 9
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Full Sun, Partial Sun, Partial Shade
3'-4' / 0.9m - 1.2m
2'-3' / 0.6m - 0.9m
Russia/Siberia, China, Japan
Clay, Loam, Sand
Lavender, Blue Violet
Green, Light Green
Bog Garden, Cutflower, Feature Plant, Mixed Border, Water Gardens
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