Yellow Flag Iris (Iris pseudacorus) |
Status: |
Listed Noxious Weed In Montana |
History: |
First Montana Specimen Collected 1 |
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County: |
None |
Year: |
None |
| "Has been found in
the wild of the northeastern United States for close to 140 years.Still
a horticultural favorite it often escapes cultivation."
(All About Flowers) |
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Habitat: |
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Growth Habit: |
Perennial monocot
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Leaves: |
Sword like leaves can be 4 to 5 ft tall.
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Stem: |
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Flower: |
Showy yellow spring flowers with sepals etched in brown or purple.
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Roots: |
Thick tuberous rhizomes.
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Seeds: |
Germination rates from 48% to 62%
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Other Notes: |
Currently no know infestations in the Yellowstone River Corridor.
Plants grow vigorously in water or wet soil.
Yellow Flag Iris is poisonous. Even when dry it causes gastroenteritis in cattle.
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