Lavandula x intermedia ‘Grosso’ Ht. 30-36” Also known as a Lavendin, one of the largest with its long stems and purple flowers. Ornamental, pollinator plant, culinary, cut flower, fresh or dried, lavender wand, essential oil. Perennial. Lavender grows best in full sun with well-drained soil. Allow soil to dry out between watering. All of the lavenders we grow and sell are hardy from Zones 5-11.