Organic Vegetable Gardening with SunflowersHelianthus, better known as the Sunflower, is one most exciting additions to your organic garden. These robust calcium rich sun loving plants grow to between 8 and 15 feet high in rich soil within 6 months. As an added bonus, sunflowers attract a variety of birds, a fun and educational experience for the whole family! Plus, certified organic sunflowers seeds make a great snack and are a source of healthy (polyunsaturated fat) oil for cooking and salads. Don't Forget the Sun in SunflowerSunflowers thrive in just about any soil, but will grow vigorously with compost and manure and produce meatier seeds.