Russian Mammoth Sunflower
Russian Mammoth is the quintessential giant sunflower — towering plants crowned with enormous golden-yellow heads that can measure 12 to 18 inches across and are loaded with large, striped seeds beloved by birds and roasting enthusiasts alike. Each flower head is a spectacle of late summer, turning to follow the sun throughout the day before bowing slightly under the weight of hundreds of plump, ready-to-harvest seeds. Few things in the garden are more dramatic or more rewarding.