56-70 Days to maturity. Eschscholzia californica. Mission Bells California Poppy Seeds. Non-GMO, annual. Mission Bells California poppy seeds grow a classic, durable, and authentic touch of the cool California hills in your home or garden. Mission Bells is easy to grow from seed and a hardy full sun performer, yet still elegant enough for any fresh-cut basket or bouquet. Mission Bells California poppies grow natively in the temperate coastal climates of the Pacific Northwest, but promise to thrive in a number of cool summer gardens across the country. ~18,500 seeds/oz.