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Blue Lobelia

Lobelia siphilitica

Peter Kalm, the eighteenth-century Swedish natural historian, reported that native Americans used this perennial as a remedy for venereal disease. Carl Linnaeus therefore named it siphilitica. Although grown in European gardens earlier, it was sold by Philadelphia nurseryman Bernard McMahon in 1804.Great Blue Lobelia grows to three feet and produces an elegant blue, sometimes white, flower in mid to late summer.

Growth Type: 
Perennial
Color(s): 
Blue
Hardiness Zones: 
Zone 5, Zone 6, Zone 7, Zone 8
Location at Monticello: 
West Lawn
Planting Conditions: 
Shade
Blooming History: 
2002 Jul 23 to 2002 Oct 162003 Jul 9 to 2003 Sep 262004 Jul 19 to 2004 Sep 102005 Jul 20 to 2005 Oct 102006 Jun 30 to 2006 Dec 12007 Jul 20 to 2007 Nov 152008 Aug 1 to 2008 Oct 132009 Aug 4 to 2009 Sep 12011 Jul 15 to 2011 Sep 292012 Jul 20 to 2012 Oct 12013 Sep 11 to 2013 Nov 72014 Jul 17 to 2014 Sep 122015 Jul 14
Visit Monticello’s Online Shop to check for seeds or plants of Blue Lobelia.

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