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- 'Giganteous' - (Non-GMO) - Sunflower Seeds - 2 Grams
'Giganteous' - (Non-GMO) - Sunflower Seeds - 2 Grams
18+ Seeds per Pack!
Grow Gigantic Sunflowers in one short season. 3.6m (12') tall. Flower heads grow up to 45cm (18") across. Edible seeds. Direct sow seeds 1cm deep. Allow one metre between plants. Optimal soil temperature for germination: 22°C+ (72°F+). So you can get these planted directly after last frost using a black row cover can help to warm up soil for germination.