Propagation: Seeds are often used for propagation or self-sowing. Spring sowing in greenhouse in early March, transplanting with soil cover in late May and early June 1 time, or direct broadcasting in the open field in late April and early May. Seeding and seedling raising in warm ground can be carried out in September, and transplanting in late June and early October 1 time, 1 1 time. Seed collection should be carried out when sepals turn brown and threshed after drying.
Cultivation: Sunflowers like sunny, cool and humid places, which are cold-resistant, adaptable and not strict with soil, and grow well in soil rich in organic matter and well drained.
Garden use: Sunflower plants are tall and stretched, with ornamental effect similar to flowering shrubs. They can be planted in clusters, used as materials for flower borders and corners, and can also be used for potted viewing.