Helianthus annuus varieties deliver impressive results with minimal effort, producing oversized flower heads atop towering stems that exceed 180cm in height. These vigorous growers are ideal for competitive cultivation—a classic choice for gardeners keen to establish record heights. Sow indoors March to May for summer flowering, or direct sow for July to October blooms. Each packet contains 75 seeds, providing ample opportunity for succession planting and experimentation across growing seasons.