The flowering period of potted sunflower is very long, and the fertilization method is as follows. Sunflower is a plant with strong vitality. After planting, it can grow without any care. As long as one flower is removed, many sunflowers can grow, just because its vitality is tenacious and it can't die in the village. It is the same to plant sunflowers as potted flowers. It can grow well without any watering or fertilization, but it will swell if it is managed during the growth process. Although it has strong adaptability to the sun, it also has high requirements for its most natural conditions. If some fertilizer is added to supplement nutrition when it grows, it will grow better and have good quality. When the sunflower is young, you can put some nitrogen fertilizer, which can promote the growth of its branches and leaves and make it bloom better. After the flowers bloom, you can put some phosphorus and potassium fertilizers to make the buds bloom beautifully, and you can also put some rotten poultry droppings and some plant ash. You should pour less oxygen diluent every half month to supplement its nutrition and make it lack of nutrition. Besides fertilizing the sunflower, we should also give it light. Put it in the sun every day and let it absorb the sun, so that it will bloom big and red flowers, and it will understand our intentions and grow hard. In addition, in very hot summer, water should be poured a little in the morning, but not too much, and there should be no accumulated water, which will make its roots rot and lead to its failure to grow. Fertilize it regularly, don't apply too much fertilizer, it will burn, and don't put too much water when watering it, otherwise it will drown, so although it doesn't take much effort to raise it, you should be careful, because it is also a small life.