Water sunflower every 2-3 days, apply thin fertilizer once a week in spring and autumn, apply water-soluble fertilizer to vine leaves to make them full of water and fertilizer, put them in the sun for more than 10 hour, control the temperature at about 20℃, avoid high temperature in summer and low temperature in winter, do a good job in pest control, and spray liquid medicine regularly to make them flourish in March-May.