Biennial (or short-lived perennial) native to Québec. Its flowers open late in the day and remain open until the next morning (longer in cloudy weather). They are therefore visited especially by moths.
Height: 65 to 125 cm (sometimes higher)
Width: 25 to 45 cm
Blooms: yellow, slightly fragrant, July to September
Attractions for wildlife: attracts butterflies, pollinators and hummingbirds