How to grow sunflowers for viewing?
Do you know these? Here is an explanation about the herbaceous flower sunflower for viewing, how to grow sunflowers for viewing? Let's follow the editor to take a look!
The suitable germination temperature for sunflowers is between 22 to 30℃, and they can germinate within 5 to 7 days after sowing. Transplant once when they have 4 to 6 true leaves and plant them when they are about 10 centimeters tall, covering the roots with soil to consolidate them and prevent lodging. After the plants have survived, apply top dressing with either organic or chemical fertilizers. More watering is needed after the bud formation to keep the soil moist.
The main cultivation points are as follows:
1. Dwarf sunflowers are 30 to 40 centimeters tall, with flower diameters of 10 to 17 centimeters, single petals that are bright and golden yellow, and black centers. They generally bloom 50 to 55 days after planting and are suitable for potting and bedding plantings.
2. Seedlings are propagated by sowing seeds, usually in April. The optimal germination temperature is between 15 to 18℃. Use shallow trays or boxes for sowing, with a loose, moisture-retaining, and sterile medium. Sow seeds individually, 2 seeds per hole, and cover with 1 to 2 centimeters of medium to maintain the required moisture for germination and increase the stability of the seedlings, reducing the occurrence of shellseedlings. Generally, seeds germinate within 7 to 14 days, and after the seedlings emerge, pay attention to ventilation and cooling, control the humidity, and gradually expose them to light.
3. Transplanting and care: As the seedlings grow, thin them out, leaving 1 plant per hole. When the seedlings are 7 to 8 centimeters tall, they can be transplanted. Use fertile, well-draining sandy soil for the pots. When transplanting, apply enough base fertilizer at the bottom of the pot and try to take as much soil as possible with the seedlings to minimize root damage and help the plant recover faster. Dwarf sunflowers prefer full sun and a warm environment, are not tolerant to shade, and are not cold-resistant. Apply fertilizer every 20 days during the growing season, but apply 2 to 3 times of thin phosphorus-potassium fertilizer before blooming. Keep the soil moist, especially during hot and dry summers. To ensure the healthy growth of the main stem's terminal bud, remove the axillary buds. For taller stems, set up stakes to prevent them from falling over due to the wind. Artificial pollination during flowering can increase the seed setting rate.
The above is a complete introduction to how to grow sunflowers for viewing. I hope it can be helpful to you. Don't forget to visit more often for more flower cultivation experience and knowledge!