Species Iris, Vesper Iris

Irisdichotoma

Family
Iridaceae (eye-rid-AY-see-ee)
Genus
Iris (EYE-ris)
Species
dichotoma (dy-KAW-toh-muh)
Synonym
Evansia dichotoma
Evansia vespertina
Iris pomeridiana
Pardanthopsis dichotoma
Pardanthus dichotomus
Spacing
36-48 in. (90-120 cm)
Hardiness
18-24 in. (45-60 cm)
Sun Exposure
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)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
Danger
Full Sun
Bloom Color
Parts of plant are poisonous if ingested
Foliage
Lavender
White/Near White
Class
Allow pods to dry on plant; break open to collect seeds
Bloom Time
Other Details
Other details
Mid Summer
Late Summer/Early Fall
Propagation Methods
Deciduous
Seed Collecting
Soil pH requirements
By dividing rhizomes, tubers, corms or bulbs (including offsets)
Patent Information
Awards (if applicable)
Foliage Color
Bloom Characteristics
Perennials
Water Requirements
Where to Grow
Regional

This plant is said to grow outdoors in the following regions:

Machesney Park, Illinois

Pinconning, Michigan

Rochester, New York

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Gardener's Notes:

1
positive
2
neutrals
0
negative
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S
Louisville, KY (Zone 6b) | January 2007 | neutral

I believe this plant has been moved to genus Iris


Editor's Note

The entry has been update...Read More

H
| July 2003 | positive

This is a great plant for the night garden as the blooms last from late afternoon until after complete darkness. The iris like foliage i...Read More

T
T
Murfreesboro, TN (Zone 7a) | August 2001 | neutral

This short-lived member of the Iris family is the only plant in its genus. Cold hardy to Zone 6, can be planted as an annual if sown in ...Read More

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