Quick answer: Rocky Mountain iris (Iris missouriensis) is native to 11 states. What's commonly sold under this name is the true wild species. It's typically seeds, verified 15 Sep 2026.
Photo: Walter Siegmund (talk), Wikimedia Commons (CC BY-SA 3.0)
Where it's native
Listed in the directory as native to these states. Click a state for its full native-plant guide.
Growing conditions
From the Lady Bird Johnson Wildflower Center Native Plant Database.
| Sun | Sun |
|---|---|
| Water | Wet |
| Soil | Wet soils |
| Bloom | May-Jun |
| Height | Up to 2 ft |
| Wildlife value | Attracts hummingbirds |
none; spreads to form colonies
Buying it
Sold true to the wild species as of the last check (15 Sep 2026), via Amazon.
Sold as: Seeds via Amazon · listing verified 15 Sep 2026
See where to buy →Quick answers about Rocky Mountain iris
Where is Rocky Mountain iris native?
Rocky Mountain iris (Iris missouriensis) is native to 11 states across the Midwest and West. Check your state's page in this directory for the full list of plants native where you live.
When does Rocky Mountain iris bloom?
Rocky Mountain iris blooms May-Jun. Exact timing shifts a few weeks with latitude and elevation.
What growing conditions does Rocky Mountain iris need?
Light: Sun. Water: Wet. Soil: Wet soils. Mature height: Up to 2 ft.
Is Rocky Mountain iris good for pollinators and wildlife?
Yes. Wildlife value: Attracts hummingbirds.
Is Rocky Mountain iris deer-resistant or drought-tolerant?
Rocky Mountain iris is deer-resistant and handles wet soil.
Where can I buy real Rocky Mountain iris seed or plants?
We found a listing sold as seeds that names the true species, last checked 15 Sep 2026. Look for the scientific name Iris missouriensis on any listing.
Similar native plants
Native plants that share growing conditions or range with Rocky Mountain iris.
- Upland larkspur Delphinium nuttallianum
- Seep monkeyflower Erythranthe guttata
- California fuchsia Epilobium canum
- Colorado blue columbine Aquilegia coerulea
- Swamp milkweed Asclepias incarnata
- Nettleleaf giant hyssop Agastache urticifolia
Also listed under
Get the full buying guide
Every pick worth knowing across pollinators, shade, drought and more, in one PDF, with the tradeoffs spelled out. No spam, unsubscribe anytime.