Sunflower has a positive meaning, which many friends like very much. Do you know that there are many kinds of sunflowers? Today, let's learn about the cultivation methods of ornamental sunflowers~
Cultivation method of Ornamental Sunflower cultivation method of Ornamental Sunflower: the suitable temperature for the germination of Ornamental Sunflower is 22-30 ℃. It can germinate 5-7 days after sowing. It can be transplanted once when 4-6 real leaves are sent out. The seedling height is about 10cm, and the root is covered with soil to consolidate the root and avoid lodging. Topdressing was applied immediately after planting survival, and the effects of organic fertilizer and chemical fertilizer were ideal. After flower buds are formed, it is advisable to irrigate more water to keep the soil moist.
1. Dwarf sunflower is 30-40 cm high and 10-17 cm in diameter. Its single petal is bright golden and its flower center is black. It can bloom 50-55 days after planting. It is suitable for potting and flower bed planting.
2. Seeding is adopted for seedling breeding, which is generally sown in April. The optimum temperature for germination is 15 to 18 ℃, which can be sown in shallow pots or boxes. The medium shall be loose, with good water retention and sterility. Sowing should be on-demand, with 2 seeds per hole. After sowing, it should be covered with 1-2 cm thick medium to maintain the humidity required for germination, increase the stability of seedling stage and reduce the occurrence of shell seedlings. Generally, it germinates 7 to 14 days after sowing. After emergence, pay attention to ventilation and cooling, control humidity, and gradually see light.
3. Planting and maintenance: when the seedlings are ready, they can be planted one after another, leaving one in each hole, and the seedling height is 7 to 8 cm. The basin soil is rich in humus and well drained sandy soil. When planting, apply enough base fertilizer to the basin bottom, and take more soil and less root damage when digging seedlings, so as to make the plant recover quickly. Dwarf sunflowers like sunny and warm environment. They are not resistant to shade and cold. Fertilizer should be applied once every 20 days during the growth period, but thin phosphorus and potassium fertilizer should be applied 2 to 3 times before flowering. Always keep the soil moist, especially when it is hot and dry in summer. In order to make the terminal bud of the main branch grow and develop healthily, the (axillary) bud can be removed. For those with slightly higher stems, pillars shall be set up to prevent wind lodging. Artificial pollination during flowering can improve the seed setting rate.
Cultivation method of Ornamental Sunflower
Expand knowledge - common varieties of ornamental sunflowers: 1. "Bagido" is a new Sunflower Variety. Its spherical and naturally dwarf plant shape is very suitable for container planting“ The plant height of "bagido" is only 50cm. It is dwarf, compact and can produce a large number of branches. These lateral flower heads can ensure that the plant forms a full ball‘ Bagido 'is a perfect potted flower variety“ It only takes 60 days from sowing to flowering. There are five colors: golden black heart, golden yellow heart, lemon yellow, red and red yellow.
2. Sunflower "wow" is a Sunflower Variety with a large number of gorgeous golden flowers and green decorative leaves“‘ Wow "the plant is 90cm high, with lush flowers blooming at the top of the plant, and the black heart sets off the golden petals more brightly, which is very rich in clothing
The decorative dark green leathery leaves are also very attractive“ Wow "has a long life and usually blooms later than other varieties of sunflowers, so it is an ideal plant material to bring colorful colors to the end of summer.
3. Sunflower "autumn time" is a breakthrough Sunflower Variety“ The plant height of "autumn time" is 120cm. It is the first medium height sunflower mixed color variety with golden yellow, red and brown colors. The trunk can produce a large number of branches, which is very suitable for cutting flowers.
Helianthus annuus
4. Sunflower "Jinhui" is a very eye-catching Sunflower Variety. It can grow a large number of golden flower heads to form a golden isolation belt“ The plant height of "Jinhui" is 160cm, the crown width is 90cm, has strong branching, and the plant is very compact. The flowers are extremely lush, bright golden yellow flowers with a diameter of 15 cm“ Jinhui takes only 60 days from sowing to flowering. It is an ideal cut flower variety.
5. Sunflower "golden autumn" is the only Sunflower Variety with amazing geometric patterns“ The plant height of "Jinqiu" is 70cm, and the bright golden yellow petals surround the fresh green flower center, which is very attractive“ "Golden autumn" is the perfect choice for fresh cut bouquets of sunflowers.
6. Sunflower "Yanyang", "Yanyang" is a dwarf double petal Sunflower Variety. The plant is 60 cm high, the flower diameter is 15 cm, the golden yellow large flower is highly double, and the flower is lush.
7. Sunflower "Moonlight", green flower center is its characteristic, which is different from the general black flower center sunflower, so it makes people feel fresh.
8. Sunflower "cocoa", a red variety of sunflower, is very special, but it is not easy to cultivate. Sometimes it is "red to black".