FoliageSiberian Iris
Iris sibirica
Siberian Iris (Iris sibirica) is a fast-growing perennial, hardy in USDA zones 3-8, that matures to about 2-4 ft. It does best in full sun and part shade in well-drained, moist and occasionally-wet soil. Expect blue, brown and yellow blooms in spring and summer. It attracts bees, butterflies and pollinators, stands up well to black walnut, deer and drought, grows happily in containers.
- USDA zones
- 3-8
- Sun
- Full sun, Part shade
- Mature size
- 2-4 ft
- Growth rate
- Fast
- Maintenance
- Low
- Soil
- Well-drained, Moist, Occasionally-wet
- Bloom color
- Blue, Brown, Yellow, Orange, Purple, Red, White
- Bloom season
- Spring, Summer
- Attracts
- Bees, Butterflies, Pollinators
- Tough against
- Black walnut, Deer, Drought, Pests, Poor soil, Rabbits, Wet soil
- Native to
- Hybrid of two Asian species
In the landscape
Data sources
Freeze survival
Will it survive your winters?
Hardiness zones show a normal bad winter. We check the worst one — Siberian Iris is hardy to about -40°F (estimated from USDA zone 3), so we'll score it against the real coldest nights your area has actually had.
Powered by ~35 years of daily lows from the nearest NOAA weather station. A risk read, not a guarantee — a sheltered spot or mature plant beats the odds.
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