Common names:
Dutch Iris
Iris

Data specific to Irises (Edit)
Classification: Arilbred

General Plant Information (Edit)
Life cycle: Perennial
Minimum cold hardiness: Zone 3 -40 °C (-40 °F) to -37.2 °C (-35)
Maximum recommended zone: Zone 4a
Flowers: Nocturnal
Conservation status: Vulnerable (VU)

photo by Lilian A. Guernsey from the Bulletin of the American Iri

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