Culture method of cornflower

Cornflower, also known as blue hibiscus, Cuilan, litchi chrysanthemum, etc., is an annual or biennial herb of the Compositae family, with high ornamental value, tall and straight planting plants, long pedicels, suitable for cut flowers, and can also be used as flower diameter materials. Dwarf plants are only 20 centimeters high and can be used for flower beds, grass edges or potted flowers. Let's take a look at the breeding methods of chrysanthemum.

Growth habits of cornflower

The hometown of cornflower is in Europe, it used to be a kind of wild flower, after many years of cultivation, the "wild" nature has become less, the flower has become bigger, and the color has become more. There are purple, blue, light red, white and other varieties, of which purple and blue are the most precious. There are everywhere in Germany's hillsides, fields, watersides, roadsides, front and back houses, and are regarded as the national flower in Germany. Its adaptability is strong, like sufficient sunshine, not resistant to wet shade, must be planted in a place with sufficient sunshine and good drainage, otherwise it will often lead to death due to dampness. More hardy, like cold and cool, avoid hot. Like sandy soil that is fertile, loose and well drained.

Propagation methods of cornflower

Cornflower seeds are generally sown in spring and autumn, of which autumn is the best, probably from mid-August to mid-late September. When planting, sow the seeds in the seedbed in the open field, gently compaction, and then pour the right amount of water, covered with grass, can germinate quickly, and remove the grass after sprouting. When the leaves grow to 6-7, they can be planted in November, and then 1:5 of rotten human feces and urine will be applied every 10 days or half a month until February to March of the following year. Potted sowing requires fertile and loose soil, and mixed soil such as rotten leaves is recommended.

Culture method of cornflower

1. Planting: after survival after planting, cornflower seedlings are plucked once to promote more branches and blossom more. On the contrary, if there are too many branches, part of the lateral buds should be removed if necessary, and larger flowers can be obtained. Because of taproot, it is appropriate to direct broadcast autumn sowing open field cover overwintering, early summer flowering, such as cold bed overwintering can blossom at the end of spring, spring sowing should be sown as soon as possible. It blossoms in June.

2. Potted soil: the potted soil of cornflower should be loose and fertile, and sandy soil with good looseness and drainage should be selected. it is best to use garden soil rotten leaves, plant ash and so on to be mixed with mixed soil. it is best to maintain good ventilation and facilitate drainage. If the soil is too sticky, 30% snake sawdust or perlite can be added into the soil.

3. Temperature: the cornflower has strong cold resistance and can be planted in open field in East China, while it must be covered in North China to survive the winter. Cut flowers are usually cultivated in greenhouse, sowed in August, planted in September, and can produce flowers in February of the following year. The warm land in the customs is usually sown from August to September, the open field is covered with overwintering, it is planted in early spring of the following year, and blossoms in early summer. The northeast is sown in spring in the greenhouse.

4. Watering: the cornflower is not resistant to shade and dampness, so it only needs to be watered once a day, but in the hot and dry summer, it is watered once in the morning and in the evening to meet the water demand and cool the soil at the same time. Pay attention not to pour too much water to cause accumulation in the basin.

5. Fertilization: the cornflower likes to be more fertile and needs fertile soil. During the growth period, the three-element diluent should be applied once a month. If the leaves are too luxuriant, the proportion of nitrogen fertilizer should be reduced, and more phosphorus and potassium fertilizer should be applied before flowering in order to get larger and beautiful flowers.

Matters needing attention of cornflower

1. The cornflower is strong, cold-resistant and sunny, requiring fertile, loose and well-drained soil.

2. Basal fertilizer should be applied before planting cornflower. Because the cornflower has a straight root system and is not resistant to transplantation, it is necessary to bring a larger soil mass when transplanting.

3. The stem of Chrysanthemum morifolium is thin and weak and is easy to lodge, so the planting distance should not be too dense. It is necessary to prevent the lodging caused by overdense growth and poor ventilation.

4. Cornflower needs to top and pick the heart at the seedling stage to promote more branches and dwarf the plant, so that it blossoms more and the plant shape is beautiful.

5. During the growing period of cornflower, liquid fertilizer should be applied once every 20 days, but it should be noted that more nitrogen fertilizer should be applied, and more phosphorus and potassium fertilizer should be applied properly to make the stem firm and the flower color bright.

6. the cornflower should be watered properly, not too much, and pay attention to timely drainage in the rainy season, otherwise it will cause rotten roots and affect the normal growth of the plant.