100 VARIETY GIANT IMPERIAL LARKSPUR MIX FLOWER SEEDS Giant Imperial Mix Larkspur Favorites for the garden and the vase. Tall, showy, delphinium-like flower spikes are unsurpassed for cut flowers. Includes shades of blue, pink, carmine and white. Larkspur Giant Imperial Mix Seed can be used to grow flower in shades of blue, pink and white from late spring to first frost. The flowers, which have densely-flowered spikes, can add an elegant compliment to the flowers in your garden or bouquet. flowered spikes in shades of blue, pink and white full sun light grow to 4 ft. Bloom from late spring to first frost Grows best in cool weather