Hibiscus trionum --Venice Mallow--

Venice rose-mallow has deeply-lobed leaves and large flowers that open for only a short period during the day, giving this species its alternate common name of flower-of-an-hour. It is native to Europe, but due to widespread cultivation in gardens, it has escaped to become a weedy naturalized plant nearly throughout North America. It is found in all New England states in disturbed areas. Cultural RequirementsSun Exposure Full sun from early ageFrost Tolerance NoneAppearanceGrowth Rate FastGrowth Form PerennialAnnualOrnamental Value BreathtakingUsesGardening OrnamentalFood/Medicinal Medicinal