| Description | Gerald Darby Iris (Iris x robusta) is a good marginal plant. Grows best in wet to some standing water. Forms good sized clumps of vertical sword shapes leaves. |
|---|---|
| Plant Type | Perennials Hardy, Bulbs, corms, tubers, rhizoms, etc. |
| Hardiness Zone | 4 |
| Sunlight | full, mostly sunny |
| Moisture | moist to wet |
| Soil & Site | moist , water edges |
| Flowers | vilolet blue, 2-3 per scape, beardless |
| Leaves | green, vertical, sword shaped, flush of purple in the spring that fades to green |
| Stems | creeping rhizomes |
| Dimensions | 2-3 by 1.5-2 feet (HS), dense clumps slowly spreading by rhizomes |
| Maintenance | trim back foliage in the spring or fall |
| Propagation | division |
| Cultivar Origin | Created by Gerald Darby, it was named and introduced after his passing in 1967. Iris x robusta is a designation for hybrids of two native American irises (Iris versicolor x Iris virginica) |
| Notes & Reference | #144-Missouri Botanical Gardens web site (www.missouribotanicalgarden.org) |
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