Common name: Flowering Tobacco, Jasmine Tobacco, Ornamental Tobacco. Scientific name: Nicotiana alata. Family: Solanaceae. Genus: Nicotiana. Species: alata. Flower colors: green, red, white, yellow, pink. Flowering time: Summer to fall (Most varieties bloom late-afternoon to evening) Plant time: Annuals. Height: 36-48 in. (90-120 cm).