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Growth Type Annual
Hardiness Zones 1-10
Planting Conditions Full Sun
TJ Documented Plant Yes

Thomas Jefferson recorded this tender annual in Monticello's flower border in 1811, calling it "Scarlet Mallow." He likely received seed from Philadelphia nurseryman Bernard McMahon, who noted the flower in his 1806 book, The American Gardener's Calendar. Pentapetes ("five petals") phoenicia ("scarlet") forms a handsome four-foot-high plant with deep green, heavily lobed leaves, and attractive, orangish-red, mallow-like flowers. The blossoms open around noon and close the following down.

Further Sources

Visit Monticello’s Online Shop to check for seeds or plants of Scarlet Pentapetes.

Typical Blooming Dates: August - October
Color(s): Reds
Location at Monticello: West Lawn