Sunflower, also known as sunflower and sunflower, is a kind of oil crop originating in Europe. Its flowers are shaped like the sun and golden in color.
If the flowers are sown in April every year, the flowering period of sunflowers is from July to August of that year, and the seeds will ripen in August to September.In addition, it can be promoted to blossom all the year round by means of accumulated temperature.As long as the temperature is enough, it can blossom.Potted sunflowers usually begin to bloom in June each year.
It usually takes six to nine days for a sunflower to fully open.Generally, the second day to the fifth day after flowering is its peak flowering period, with a large number of flowering and high ornamental value.
The flowers of sunflowers have single petals and double petals, which look like a large flower disc.The flowers come in a variety of colors, golden, orange and purple, and the disk has ligulate and tubular flowers.
After the sunflower is in full bloom, it is necessary to ensure that it has enough light in its growing environment.If potted, it is best to breed on the balcony facing the sun, and water it in time to ensure adequate water supply.In addition, timely fertilization, urea and diammonium can be applied once a week to supplement nutrients.
And watch out for locusts.After the sunflower blooms, it will attract many insects, the most important of which is the sunflower moth, which feeds on sunflower seeds.After a rainy day, it will make the flower disc fester.The talcum powder can be diluted to be made into a dust agent to be sprayed once every two or three days.
