Sunflower is an annual plant, sowing in spring, flowering in summer and bearing fruit in autumn. It can be planted in spring or summer in warm climate to ensure flowering and fruiting in summer or autumn. Sunflower is a tropical flower, which likes warm climate and is not cold-resistant. Spring sowing is the most suitable. This flower does not choose soil, has strong adaptability, and can grow better when planted in loose and fertile soil with good drainage.