Delphinium ajacis (Rocket larkspur) Blue/Purple/Pink. Annual. Mid/Late Season Bloom. Height up to 36". Sun/Shade. 150,000 per pound Origin: Europe. Zones: 3-9. Recommended Coverage: 1 oz. Up to 75 Sq.-- Ft. 4 oz. Up to 275 Sq. Ft. -- 1 Pound Up to 1,100 Sq. Ft