Tall Bearded Iris | |
Iris |
Classification: | Species |
Life cycle: | Perennial |
Soil pH Preferences: | Extremely acid (3.5 – 4.4) Strongly acid (5.1 – 5.5) Slightly alkaline (7.4 – 7.8) |
Minimum cold hardiness: | Zone 3 -40 °C (-40 °F) to -37.2 °C (-35) |
Maximum recommended zone: | Zone 4b |
Flowers: | Nocturnal |
Conservation status: | Extinct (EX) |
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