1. flowering time If the flowers are planted in April every year, the flowering period of the sunflower is from July to August of that year, and the seeds will mature from August to September. In addition, it can be promoted to bloom all year round by accumulating temperature. As long as the temperature is enough, it can blossom. Generally, potted sunflowers begin to bloom one after another in June every year.
2. Flowering mechanism It usually takes six to nine days for a sunflower to fully bloom. Generally, the second day to the fifth day after flowering is its full flowering period, with a large number of flowers and high ornamental value.
3. Flowering morphology The flower pattern of sunflower has single petals and double petals, and looks like a big disk. The colors of flowers are varied, including golden yellow, orange yellow and purplish red, and the disk has tongue-shaped and tubular flowers.
4. Flowering management After the sunflower is in full bloom, it is necessary to ensure sufficient light in its growing environment. Potted plants are best cultivated on the sunny balcony and watered in time to ensure adequate water supply. In addition, there is timely fertilization, and urea and diammonium can be applied once a week to supplement nutrients.
And pay attention to prevent locusts. Sunflowers attract many insects after flowering, the most important one is the sunflower moth, which feeds on sunflower seeds. After it rains, the flower tray will fester. You can dilute talcum powder to make dust agent and spray it once every two or three days.
Second, the pictures of sunflowers