Mammoth Giant Sunflower is a sunflower variety that produces a single large yellow sunflower of 3 to 4 m tall and 25-50 cm in diameter. Once mature, the white seeds are edible and very popular with birds. Its imposing size makes it possible to serve as a tutor or shade for other plants.
Scientific Name: Helianthus annuus
Plant Life Cycle: annual
Sunlight: Full sun
Soil requirement: Well draining and rich
Sowing and cultivation: Sow indoors in the early spring and transplant outside once all danger of frost is over. Protect from slugs and snails.