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Sweet Flag Iris

Iris pallida
This handsome Iris species belongs to an ancient group, dating to the seventeenth century, that was the ancestor to our modern Tall Bearded Iris. Early American settlers grew Iris pallida types because they were easy to transport across the Atlantic and the continent. They are tough, drought resistant, long-lived, and resistant to borers and disease. Jefferson grew Iris at Monticello, but it is not clear whether or not this species was among them.
Visit Monticello’s Online Shop to check for seeds or plants of Sweet Flag Iris.
Growth Type: 
Purple, yellow
Hardiness Zones: 
Zone 3, Zone 4, Zone 5, Zone 6, Zone 7, Zone 8, Zone 9, Zone 10
Location at Monticello: 
West Lawn
Planting Conditions: 
Shade and Full Sun
Blooming History: 
April 15, 2002 to May 13, 2002April 30, 2003 to May 13, 2003April 23, 2004 to May 18, 2004April 26, 2005 to June 3, 2005April 25, 2006 to May 19, 2006April 25, 2007 to May 22, 2007April 25, 2008 to May 15, 2008April 25, 2016 to May 20, 2016April 24, 2017 to May 18, 2017April 19, 2019 to May 17, 2019


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