Photo by Melody

PlantFiles: Western Blue Flag, Rocky Mountain Iris
Iris missouriensis

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Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Species: missouriensis (miss-oor-ee-EN-sis) (Info)

» View all varieties of Iris

2 vendors have this plant for sale.

12 members have or want this plant for trade.

Class:
Species

Height:
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)

Spacing:
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)

Hardiness:
USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:
Full Sun
Sun to Partial Shade

Danger:
Parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction

Bloom Color:
Medium Blue
Blue-Violet

Bloom Time:
Late Midseason (MLa)
Late (La)
Very late (VLa)

Foliage:
Herbaceous

Other details:
May be a noxious weed or invasive
Requires consistently moist soil; do not let dry out between waterings

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Non-patented

Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds

Awards (if applicable):
Unknown - Tell us

Click thumbnail
to view:

By Kelli
Thumbnail #1 of Iris missouriensis by Kelli

By kennedyh
Thumbnail #2 of Iris missouriensis by kennedyh

By Kelli
Thumbnail #3 of Iris missouriensis by Kelli

No details have been posted.

Regional...

This plant has been said to grow in the following regions:

Denver, Colorado



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