Diminutive dwarf iris flowering at just 10–15 cm tall in late winter, with deep violet, blue or purple falls strikingly marked in yellow.
Hardiness ratings
| System | Rating | Temperature range | How to read it |
|---|---|---|---|
| USDA hardiness zone | Zone 5–9 | −28.9 °C to −1.1 °C | Plant tolerates down to this zone |
| RHS hardiness rating | H6 | −20 °C to −15 °C | Plant needs at least this level of cold tolerance |
| Canadian plant hardiness zone | Zone 5–8 | −23 °C to −1 °C | Plant tolerates down to this zone |
| Australian (ANBG) zone | Zone 1–4 | −15 °C to 5 °C | Plant tolerates down to this zone |
Growing notes
- Flowers in February–March in much of the Northern Hemisphere — a reliable late-winter colour marker before larger irises start
- Tends to flower well the first year, then split into non-flowering offsets — many gardeners treat as annuals and re-plant fresh bulbs each autumn
- Needs a hot dry summer dormancy — excellent in rock gardens, troughs and gravel beds, less reliable in moist mixed borders
- Needs winter chilling
Pet caution: Reticulated iris is listed as potentially harmful to cats and/or dogs. Keep pets from grazing on it, and contact a vet if you suspect your animal has eaten some.
Categories
Related plants
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