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Sunflower

Helianthus annus
While Jefferson took great interest in plants, such as sesame and olive trees, that produced useful oils, there is no indication that he recognized such a benefit in the Sunflower. His listing of it as one of the "Hardy perennial flowers" sown at Monticello in September 1771, seems to show that he grew it for its large and striking flower, a quality that keeps it in ornamental gardens today.
Visit Monticello’s Online Shop to check for seeds or plants of Sunflower.
Growth Type: 
Annual
Color(s): 
Yellow
Hardiness Zones: 
Zone 6, Zone 7, Zone 8, Zone 9, Zone 10
Location at Monticello: 
Vegetable Garden
Planting Conditions: 
Full Sun
Blooming History: 
July 12, 2001 to August 17, 2001July 19, 2002 to August 16, 2002July 17, 2003 to August 2, 2003September 13, 2003 to September 26, 2003August 25, 2009 to October 14, 2009June 28, 2010 to September 1, 2010September 3, 2013 to October 3, 2013July 2, 2014 to September 12, 2014June 15, 2015 to September 3, 2015June 17, 2016 to August 23, 2016June 30, 2017 to August 14, 2017June 15, 2018 to August 10, 2018June 17, 2019

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