‘Passionate Rainbow’ is a compact pink-flowered cultivar that is most noted for its variegated foliage. In 2001, it was discovered growing as a naturally occurring sport in a clump of Gaura lindheimeri ‘Passionate Pink’ in Victoria, Australia. It is a compact upright plant that forms a foliage mound to 12” tall featuring narrow, lance-shaped, medium green leaves (to 2.5” long) with creamy white margins and red-pink coloration toward the apex.