There are about 15 different species of lilacs found in nature, and Syringa hyacinthiflora is the queen of them all when it comes to fragrance. And that's what makes Scentara^® Double Blue the most fragrant Proven Winners lilac yet! The cool purple blooms take on a blue tone in the spring sunshine, each one full of petals for a delicate seashell-like effect. This very heavy bloomer exhibits excellent disease resistant and a handsome, appealing shape that will look right at home in your landscape.