115-121 days. Sonnet Series snapdragon seeds grow a fragrant, classic, and authentic touch of the Mediterranean in your home or garden. Sonnet Series snapdragons are easy to grow from seed and timeless centerpieces for fresh cut arrangements, baskets, and bouquets. Snapdragon Sonnet Series seeds grow brilliant 18-24 inch tall stalks filled with gorgeous dense blooms of vivid burgundy, carmine, crimson, pink, rose, white, yellow, or mixed. Sonnet Series seeds grow cold-hardy and durable snapdragons that thrive in a variety of cool, temperate, and dry gardens.