Larkspur - Wild Delphinium Mixed Colors - 4' Tall and Used Widely by Floral Designers Wild delphinium so cherished by gardeners the world over. Long beautiful colored spikes surrounded by lovely green foliage. An excellent backdrop in any wild garden, and also ideal as a cut-flower for bouquets or pressing. Easy to Grow. Sow on Bare Soil. Non GMO and Neonicotinoid Seed Marde Ross & Company has been a Licensed California Nursery Since 1985,