(15-20” tall x 18” wide) Pristine™ Pink Penstemon has cheery pink flowers that are favorites of hummingbirds. This easy-to-grow Beardtongue enjoys full sun and an infertile, fast draining soil. It's an excellent choice for xeric gardens and make a great companion plant for Blue Flax (Linum), Tickseed (Coreopsis) and Evening Primrose (Oenothera).