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)
I have had a very hard time getting black iris to grow in my yard. Don't know why. I fianlly bought Sambuca, not expecting much, but it i...Read More
This is a fabulous black, the best of the blacks in my garden this year. It bloomed for a long time with lots of flowers, in its second ...Read More
American Iris Society Awards: Honorable Mention 2004
Introduced by Johnson, 01
Mid season bloom 37"
"Dark, blue-black tones overlaid with black violet like a black elderberry ...Read More