Siberian iris
Iris sibirica L.
Grassy-leaved iris with elegant blue-violet flowers in late spring; foliage stays upright and clean all season.
Size over time
Typical landscape size 0.6–0.9 m (2–3 ft) tall and 0.5–0.6 m (1–2 ft) wide; medium growth, about 3 years to maturity. Intermediate sizes use the planner’s growth curve (k = 0.25) from the #1 install size.
Bloom
Blue-violet flowers, May–Jun (northern-hemisphere months; timing shifts with region and season).
| Plant | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Siberian iris : May–Jun |
Design notes
- Divide when clumps hollow in the centre.
- More disease- and borer-resistant than bearded iris.
Regions
Native range: Europe and western Asia.
Not recorded as native to any of the three pilot regions.
Native status describes where the species occurs naturally. It is not a promise that it suits a particular garden; site conditions decide that.
Related plants
Plan with Siberian iris
Place it in a design, check it against your zone, light and moisture, and see it at year three and year ten.