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The flowering period of sunflowers in Ossen Park in 2022 is from mid-July to the end of August. Usually when sunflowers are sown in April, the flowering period is from July to August and the seed maturity period is from August to September. When sunflowers bloom, it usually takes 6-9 days for a flower disk to bloom from tongue-shaped flowers to all. Sunflowers bloom from the second to the fifth day of the lunar month, which is their peak flowering period. There are a lot of conversations these days. Sunflowers bloom between 4-6 a.m. and can be pollinated the next morning. Without pollination, the flowers can last 7-10 days. The growth period of sunflower refers to the number of days from seedling emergence to seed maturity, which is generally more than 85-120 days. Depending on the variety, sowing date, and cultivation conditions, the growth period is also different. The entire growth period of sunflower is divided into four stages: seedling stage, budding stage, flowering stage and maturity stage.