1、 Seeding method

Hibiscus sunflower is usually planted in May, and it is best to plant it directly on the open ground. The seed coat of the flower is very hard, so before sowing, you need to select the flower seeds with full seeds, and then soak the seeds in warm water for about 12 hours. When the flower seeds expand and are about to sprout, plant the seeds in the pot soil. After that, pay attention to watering. It is best to keep the soil slightly wet all the time, or cover it with plastic film appropriately to keep warm and promote the germination of seeds. Under normal conditions, it can germinate in a week or two. When the leaves begin to grow, gradually remove the film mulch, and remove the weak seedlings, leaving only healthy and full-bodied flowers and seedlings. Apply light liquid fertilizer once a week or so to ensure sufficient nutrients and promote the growth of seedlings. After the seedlings grow four or five leaves, they can be transplanted

2、 Cutting method

Hibiscus sunflower cutting is relatively simple. During the growth period of the plant, select a healthy and strong mature branch with tender buds and cut it, with a length of about 10-15cm. Trim the lower half of the leaves and only keep the top three or five tender leaves. Insert the branches into the wet sandy soil, about half of the cuttings, and then water reasonably to ensure the soil is wet. Pay attention to the appropriate shading treatment for the new plants to avoid direct sunlight. The branches can take root and grow in about a month, and then gradually reduce the shading, increase the light and carry out normal maintenance

3、 Ramet method

Cut off the roots of the rotten plants in spring and autumn, and wash the roots of the remaining plants gently. It is best to cut off the roots of the rotten plants in spring and autumn. Following the natural growth trend, divide the mother plant into several small bundles, and pay attention to each bundle with a part of healthy roots. Plant the separated bunches of small plants into the prepared soil, pay attention to proper watering and carry out reasonable routine maintenance. The survival rate of Hibiscus sunflower propagated by ramet method is generally high. Usually, it can resume normal growth and bloom as scheduled in the ramet year