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Four O'Clock

Mirabilis jalapa
In July of 1767 Jefferson observed the blooms of his Four O'clocks: "Mirabilis just opened, very clever." In 1811 he noted planting seed sent by André Thouin of the Parisian Jardin des Plantes in an oval flower bed at Monticello. Four O'clocks are cherished for the simple miracle of the flowers, which only open during low light periods. Although now somewhat fallen from favor, these annuals, which grow to two or three feet, create a stunning effect in the evening, and on cloudy days when planted in large groupings. 
Growth Type: 
Perennial
Color(s): 
red, purple, white, 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: 
2001 Jul 7 to 2001 Oct 192002 Jun 14 to 2002 Oct 112003 Jul 4 to 2003 Oct 172004 Jun 16 to 2004 Oct 262005 Jul 20 to 2005 Oct 252006 Jul 11 to 2006 Oct 112007 Jun 25 to 2007 Oct 122008 Jul 11 to 2008 Oct 312009 Jul 10 to 2009 Nov 32010 Aug 1 to 2010 Nov 12011 Jun 28 to 2011 Oct 132012 Jun 22 to 2012 Oct 242013 Jun 28 to 2013 Sep 282014 Jun 24 to 2014 Nov 212015 Jun 15 to 2015 Oct 12016 Jun 17
Visit Monticello’s Online Shop to check for seeds or plants of Four O'Clock.

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