Pint plant of the 10 most fragrant jasmine plant Italian Jasmine Jasminum humile Jasminum giraldi. This plant produces masses of lovely yellow blossoms all season that will cover the plant. This plant offers fragrance all summer long. This plant is a very fast grower and this plant will produce blossoms this year and can reach 12 feet high and 8 feet across. Hardy in zones 8-10.