500 PURPLE ROCKET LARKSPUR Delphinium Ajacis Consolida Flower Seeds BLOOM TIME: Summer HARDINESS ZONE: Annual (but reseeds itself easily, so it acts like a perennial in all zones) PLANT HEIGHT: 24 - 36" . . . PLANT SPACING: 18 - 24" LIGHT REQUIREMENTS: Sun - Part Shade . . . SOIL / WATER: Average Attracts bees, butterflies, and birds.