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Prickly Poppy

Argemone mexicana
On June 18, 1767 Thomas Jefferson recorded in his Garden Book that "Argemone put out one flower" in his garden at Shadwell. On July 18 he noted another Prickly Poppy flower and observed that it was "the 4th this year," a testament to Jefferson's almost childlike appreciation of the natural world around him. Philadelphia nurseryman Bernard McMahon sold Prickly Poppy, "Mexican Argemone," in 1804. This hardy annual grows to two feet and produces pale yellow flowers and attractive green and white variegated leaves tipped with prickly spines.
Visit Monticello’s Online Shop to check for seeds or plants of Prickly Poppy.
Growth Type: 
Annual
Color(s): 
Yellow
Hardiness Zones: 
Zone 1, Zone 2, Zone 3, Zone 4, Zone 5, Zone 6, Zone 7, Zone 8, Zone 9, Zone 10
Location at Monticello: 
West Lawn
Planting Conditions: 
Full Sun
Blooming History: 
January 1, 2000 to May 11, 2000May 4, 2002 to July 5, 2002August 22, 2003 to November 14, 2003May 14, 2004 to July 19, 2004July 20, 2005 to November 15, 2005June 1, 2006 to November 15, 2006June 14, 2007 to November 15, 2007July 11, 2008 to October 31, 2008June 11, 2009 to November 16, 2009May 24, 2010 to June 28, 2010August 31, 2010 to November 30, 2010June 14, 2011 to August 15, 2011May 24, 2012 to July 20, 2012July 16, 2013 to December 4, 2013May 23, 2014 to October 10, 2014June 24, 2015 to August 17, 2015June 17, 2016 to August 23, 2016June 30, 2017 to November 10, 2017May 29, 2018 to November 12, 2018May 27, 2019

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