Sunflower Ginormous FlowerZilla hybrid is absolutely gigantic- this Sunflower is a real monster. FlowerZilla is a very hungry feeder, so make sure to fertilise heavily. Sow direct where they are to grow. Firm down, water gently and keep moist through germination period. Choose a warm, Sunny, well-drained position sheltered from wind. Plants may require staking. Remove spent blooms to prolong flowering. Cut flowers are best picked before they are too old. Plant height up to 5m | Germination 10 – 14 days | Flowering 12 weeks