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)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Another amazing Iris from Schreiners welcomed me with its lovely splash of colour for the first time this summer .
Sultans Palace ...Read More
Like all the other comments say, it's a tough, dependable grower and consistent bloomer for me too. Has a much redder effect in the yard ...Read More
An excellent workhorse iris. Grows and blooms with vigor. Stems are just a little short, but the plant more than makes up for this in the...Read More
Description of Sultan's Palace Schreiner's 1977 M 34"
Tailored rich maroon-red self; F. velvety and slightly ruffled; self beard....Read More
This plant has been in the garden since 1991. It has been dug and dragged all over. Forgotten, ignored, through drought and flood and it ...Read More
Rich red blooms on stalks that stand up well to the wind & rain.
Not terribly fancy but a truly beautiful color. Jfrizzell's photo gives a good idea. Grows, blooms and multiplies well.