Iris japonica (Shaga, Japanese Crested Iris, Japanese Iris )
Botanical Information
| Family | Iridaceae |
| Genus | Iris |
| Species | japonica |
| Synonyms | Evansia chinensis, Evansia japonica, Iris chinensis, Iris fimbriata, Moraea fimbriata |
| Category | Bulbs, Perennials, Wildflowers & Weeds |
| Origin | Temperate and tropical Asia. |
Details
| USDA Hardiness Zone | 7a - 10b |
| USDA Hardiness Ref. | |
| Canadian Hardiness Zone | Requires cold season protection under glass. |
| Canada Hardiness Ref. | |
| RHS Hardiness Zone | H6 - H2 |
| RHS Hardiness Ref. | |
| Temperature (°C) | -17.7 - 1.7 |
| Temperature (°F) | 0 - 35 |
| Height | 30-45 cm |
| Spread | 30-45 cm |
| Growth | Medium |
| Flowering Period | May, June |
Description and Growing Information
| Shape | Upright. |
| Landscape | Excellent ground cover in areas where it is winter hardy. |
| Propagation | Seed or division of rhizomes. |
| Cultivation | Grown in medium moisture, well-drained soils in full to part shaded areas. |
| Notable Specimens | Trebah Garden Trust, Mawnan Smith, Falmouth, Cornwall, United Kingdom. |
| Habitat | A woodland iris that is native to forest margins and wet grasslands in Japan and China. |
| Leaf Description | Thin, semi-glossy, sword-shaped basal leaves 25 - 40 cm long, and grow in fans with downward arching tips. |
| Flower Description | Pale blue to white with yellow crests. |
| Colour Description | Medium green to deep green foliage and stems. Pale blue to white with yellow crests blooms. |
| Texture Description | Smooth. |
Photographs
Iris japonica, form, Trebah Garden Trust, Mawnan Smith, Falmouth, Cornwall, United Kingdom.
Iris japonica, flower, Trebah Garden Trust, Mawnan Smith, Falmouth, Cornwall, United Kingdom.