Culture method of swallow grass

Sow:

Delphinium can be sown in spring and autumn, but must be sown in mid-September if sown in autumn. When sowing in spring, the flowering time is in September, and that in autumn is in May of the following year. Flowers sown in spring should be estimated to avoid blooming in the heat of summer.

Change the basin:

When Swift grass grows two true leaves, it needs to take soil and transplant it in a small basin. Wait until the seedling grows up and change the pot again. Due to the lack of roots, extra care should be taken when changing pots to avoid causing slow growth or even death after damaging the roots.

Delphinium must keep the soil moist after sowing. The easiest way is to cover some grass and gradually remove the mulch after emergence.

Watering:

Swallow watering should grasp the principle of dry and wet, keep the soil moist, but avoid stagnant water. The flowering period should be watered properly to avoid poor flower shape caused by too dry soil.

Fertilization:

In the growing period, eye fertilizer was applied once every semimonthly, and phosphorus and potassium fertilizer was applied 2-3 times before flowering. The soil is kept moist during the flowering period, which can prolong the flowering period. According to the growth status of delphinium, cake fertilizer and water are applied 1-3 times a month.

Lighting:

Swallow grass likes light, and full-sunshine maintenance is beneficial to promote flowering, prevent plant overgrowth and keep plant type short and beautiful.

Height control:

After changing the basin, paclobutrazol can be used to control the height of the plant. The specific method is to apply 0.5% paclobutrazol every 2 weeks.

The culture method of swallows grass

Swallow is a perennial herb of Ranunculaceae. It is native to southern Europe and is cultivated in various provinces of China. Because of its unique flower shape, it is very similar to the name of a swallow. The flower diameter is about 4 cm, elegant and lovable. It is often planted in flower beds, flower borders, and can also be used as cut flowers. Let's take a look at the breeding methods of swallow grass.

The growth habit of delphinium

Swallow grass has strong adaptability to climate, and the humid and cool climate is more suitable. The optimum temperature for seed germination is 15 ℃, and the suitable temperature for growth period is 20: 25 ℃ in daytime and 3: 15 ℃ at night. Like light, slightly able to withstand shade, the growing period can be in the semi-shade, the flowering period should be full of sunshine. The acid soil, which is fertile, moist and well drained, can also tolerate drought and water temperature slightly, and the best pH value is 5.5-6.0.

The Propagation method of Swallow

Delphinium can be propagated by seed or cuttage. The seeds were sown in late August to early September, first sowed into the open nursery bed, entered the cold bed or cold room before winter, and planted warm in spring. The seedlings were directly broadcast in the open field in early spring in the south, and the distance between seedlings was kept at 25cm. In the north, seedlings are generally raised beforehand and planted in April, 2-4 true leaves and 4-7 true leaves. Pay attention to drainage on rainy days. Cutting propagation is carried out in spring, when the new leaves grow out of more than 15 centimeters, cut cuttings, insert into the sand. Ramet propagation can be carried out in spring and autumn, usually once every 2-3 years.

The culture method of swallows grass

1. Maintenance: swallow must keep the soil moist after sowing. The easiest way is to cover some grass and gradually remove the mulch after emergence.

2. Transplant: when delphinium grows 2 true leaves, take soil and transplant it in a small basin, wait until the seedling grows up, and then change the basin again.

3. Watering: swallow watering should be dry and wet, and a little more water should be properly watered during the flowering period to avoid excessive dryness of the soil.

4. Fertilization: when swallows were changed, dry manure was applied as basic fertilizer, and then, according to the growth situation, rotten cake fertilizer and water was applied one to three times a month.

5. Height control: paclobutrazol was used to control the height of the plant after changing pots, and 0.5% paclobutrazol was applied every 2 weeks.

6. Seed collection: the seed of delphinium should be collected in time to avoid fruit cracking after ripening.

7. Diseases: Swift grass often has black spot, root neck rot and chrysanthemum leaf blight that damage leaves, flower buds and stems. It can be sprayed with 30% topiramine wettable powder 500 times.

8. Insect pests: delphinia pests are often harmed by aphids and night eggs, which are sprayed with 2000 times of deworming essential oil.

When will swallows be sown? Culture and management methods of swallow grass

How to grow delphinium? Why the name comes from, as the name implies, is because of its unique flower pattern. Its origin is in the south of Europe, and now it is cultivated in many provinces in our country. The following editor will briefly explain the main points of the breeding methods of delphinia.

1. Morphological characteristics

Delphinium belongs to the perennial herb of Ranunculaceae, which can also be called thousand-bird flower, pigeon flower, large-flowered swallow and so on. The flower plant is generally about 35~65cm, the flower diameter is about 4cm, and the flowering and fruiting stage of delphinium is generally from August to October. The beautiful delphinium is actually a kind of Chinese herbal medicine. The whole grass and seeds of delphinium can cure toothache, and the stems and leaves can also be soaked to kill insects.

two。 Environment

Swallow grass likes light, moist and cool growth environment, more cold-resistant, slightly resistant to semi-shade, drought, not resistant to high temperature and waterlogging, and grows well on deep and fertile sandy soil.

3. Water and fertilizer

The watering of swallow grass in the growing stage needs to be dry and wet, and the flowering period needs to be watered a little more to avoid excessive dryness of the soil. In the rainy season, it is also necessary to remember to drain water in time to avoid stagnant water.

When swallowgrass plants change pots, organic dry manure can be used as basic fertilizer. In the peak growth period, we should remember to apply rotten cake fertilizer once a month, and to apply more phosphorus and potassium fertilizer at flowering stage, which can promote the blooming of flowers.

4. Dwarfing and erection

After changing the soil in spring, 0.5% paclobutrazol was applied every 2 weeks to control the height of the plant. When the plant is 20 cm high, a support net can be set up to prevent lodging. The seeds should be collected in time after maturity to avoid fruit cracking after maturity.

5. Sunshine

Swallows like sunny environments, especially during flowering. It is not necessary when it is hot in summer, but you can sprinkle more water to cool down. Swift grass potted plants need sunshade at noon to strengthen ventilation. Water control is needed in winter, giving sunshine or greenhouse lighting during the day can also blossom ahead of time.

6. Reproduction temperature

The seeds and cuttings for the propagation of delphinium can be carried out in spring and autumn, usually once every 2-3 years, and it is better to sow in the middle of September in autumn, increase lighting after entering October, and blossom in May and July the following year. The optimum temperature for seed germination is 15 degrees, and the optimum temperature for growing period is 20-25 degrees during the day and 3-15 degrees at night.

7. Administration and Management

Swallow grass in the summer high temperature to prevent moisture, the plant is not too dense, found that withered branches are cut off in time, maintain good ventilation, light and ventilation, otherwise it is appropriate to get sick and bacterial damage. Rain Water more, under the condition of moist soil, the disease is more serious, pay attention to prevention!

These are all the key points about the planting of delphinium. Do you like the beautiful and elegant delphinium? Qualified florists can try to have a look!