Evergreen South African clump-forming iris relative with stiff sword-like grey-green leaves and elegant white-and-yellow flowers marked with mauve, opening in flushes through warm months.
Hardiness ratings
| System | Rating | Temperature range | How to read it |
|---|---|---|---|
| USDA hardiness zone | Zone 8–11 | −12.2 °C to 10 °C | Plant tolerates down to this zone |
| RHS hardiness rating | H3 | −5 °C to 1 °C | Plant needs at least this level of cold tolerance |
| Canadian plant hardiness zone | Zone 9 | −1 °C and warmer | Plant tolerates down to this zone |
| Australian (ANBG) zone | Zone 3–7 | −5 °C and warmer | Plant tolerates down to this zone |
Growing notes
- Native to the eastern coast of South Africa — adapted to wide range of soils and conditions
- Drought tolerant, evergreen, virtually indestructible — among the toughest plants for hot dry borders and public landscaping
- Each flower lasts only a day, but plants flush every 2–3 weeks through warm months
- Distinct from true iris (Iris spp.) — Dietes is a separate genus, also called butterfly iris
Categories
Related plants
Cross-check Wild iris (Fairy iris) against your zones