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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.

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: 
2000 Jan 1 to 2000 May 112002 May 4 to 2002 Jul 52003 Aug 22 to 2003 Nov 142004 May 14 to 2004 Jul 192005 Jul 20 to 2005 Nov 152006 Jun 1 to 2006 Nov 152007 Jun 14 to 2007 Nov 152008 Jul 11 to 2008 Oct 312009 Jun 11 to 2009 Nov 162010 May 24 to 2010 Jun 282010 Aug 31 to 2010 Nov 302011 Jun 14 to 2011 Aug 152012 May 24 to 2012 Jul 202013 Jul 16 to 2013 Dec 42014 May 23 to 2014 Oct 102015 Jun 24 to 2015 Aug 17
Visit Monticello’s Online Shop to check for seeds or plants of Prickly Poppy.

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