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 just bought Breakers this summer and planted it in September. It already has 3 babies and a nice tall stalk with a bud on it! Can't wai...Read More
Breakers has shown excellent growth habits and rapid increase in my garden. It has never rebloomed for me, but here in zone 5, rebloom is...Read More
Never blooms. Had since 2004 and it only bloomed in 2005. Will get rid of this year.
Grows beautifully here in our high, dry climate. Beautiful blue blooms that seem to vary in color with the time of day and the brightnes...Read More
Awards: Honorable Mention 1988; Award of Merit 1990
Bloomed well in first year. Can survive zone 3b and high winds.
It took 2 years for the roots to take hold, but the wealth of deep blue blooms was a great reward.
Have had good success with this iris but had to wait a season after transplanting for bloom. Bloomed well in full and partial sun.