What are the propagation methods for larkspur? A detailed guide

Larkspur can be used for flowerbed decoration and border greening, and can be grown in pots or containers. Generally, larkspur can be propagated by sowing, cuttings, or division. The editor will introduce the propagation methods of larkspur for you; friends who like it can learn together.

Larkspur

Larkspur fruits contain many seeds, and the seeds are relatively small. After collection, dry them and store them indoors in a cool, dry place. To achieve flowering in multiple seasons, sowing can be done in stages, but in southern cultivation the flowering period should be staggered to avoid the hottest midsummer weather. Larkspur is a taproot plant with few fibrous roots and does not tolerate transplanting. In the south, it can be directly sown outdoors in autumn or spring to overwinter. In cold northern regions, it should be sown in spring; in warm northern areas, autumn sowing can overwinter outdoors with cover, or in winter it needs to be moved into a cold frame or low-temperature greenhouse to overwinter. Sow in seedling trays and water thoroughly to the bottom. The sowing rate per square meter of seedbed is about 20 grams. Control the temperature appropriately. The time for larkspur seeds to germinate and emerge is one of the longest among annual and biennial herbaceous flowers grown outdoors, generally requiring 15--20 days. After emergence, seedlings should be moved early into containers (7-8 cm in diameter) to grow into mature seedlings.

In addition, perennial larkspur of the same genus but different species can also be propagated by cuttings and division. Cutting propagation is carried out in spring, and cuttings are taken and inserted into a moist sand bed or sand tray. Division can be done in both spring and autumn. Dig up the small shoots sprouting around the old plant together with their roots, divide them into small plants, and plant them. If divided in spring, they can bloom in the same year.

Propagation methods for larkspur

Larkspur is a taproot plant with few fibrous roots, so it is best to sow directly or transplant with a soil ball. It is relatively cold-tolerant, likes sunlight, fears summer heat, and dislikes waterlogging. It is suitable for growing in deep, fertile sandy soil. Today I will introduce the propagation methods of larkspur for everyone.

Propagation methods for larkspur:

Seed propagation:

The suitable germination temperature is around 15°C, and the soil temperature is best below 20°C. Germination occurs in about two weeks. Autumn sowing is from late August to early September. First sow in an outdoor seedbed, and before winter begins move into a cold frame or cold room to overwinter, then plant out in warm spring. In the south, direct sowing outdoors in early spring, with thinning to maintain a plant spacing of 25~5 cm. In the north, seedlings are generally raised first, then planted out in mid-April; transplant when there are 2~4 true leaves, and plant out when there are 4~7 true leaves. Pay attention to drainage on rainy days. The fruit ripening period is uneven, and after ripening the fruit splits open naturally, so it should be harvested in time. Generally in June, harvest the already ripe seeds 1~2 times first, and in July select the superior ones and harvest all, dry them, and thresh. Cutting propagation is carried out in spring. When new leaves grow to more than 15 cm, cut cuttings and insert them into sandy soil.

Division propagation:

It can be done in both spring and autumn, generally dividing once every 2~3 years.

The propagation methods of larkspur are introduced here. Larkspur is native to southern Europe, and it is cultivated in all provinces of China.

How to grow larkspur

Larkspur is a perennial herbaceous plant of the genus Delphinium in the Ranunculaceae family. It is native to southern Europe and is cultivated in all provinces of our country. Because its flower shape is distinctive and resembles swallows, it is named larkspur. The flower diameter is about 4 cm, and its form is elegant and lovable. It is often planted in flowerbeds and flower borders, and can also be used as a cut flower. Now let us take a look at how to grow larkspur!

Growth habits of larkspur

Larkspur has strong adaptability to climate, and a moist and cool climate environment is more suitable. The suitable temperature for seed germination is 15°C. During the growing period, the suitable temperature is 20-25°C during the day and 3-15°C at night. It likes light and can tolerate slight shade. During the growing period it can be in semi-shade, and during the flowering period it needs full sunlight. It likes fertile, moist, well-drained acidic soil, and can also tolerate drought and slightly tolerate water temperature. A pH value of 5.5-6.0 is best.

Propagation methods for larkspur

Larkspur can be propagated by seed or cuttings. For autumn sowing of seeds, sow from late August to early September. First sow in an outdoor seedbed, and before winter begins move into a cold frame or cold room to overwinter, then plant out in warm spring. In the south, direct sowing outdoors in early spring, with thinning to maintain a plant spacing of 25-5 cm. In the north, seedlings are generally raised first, then planted out in mid-April; transplant when there are 2-4 true leaves, and plant out when there are 4-7 true leaves. Pay attention to drainage on rainy days. Cutting propagation is carried out in spring. When new leaves grow to more than 15 cm, cut cuttings and insert them into sandy soil. Division propagation can be done in both spring and autumn, generally dividing once every 2-3 years.

How to grow larkspur

1. Care: After sowing larkspur, the soil must be kept moist. The simplest method is to cover it with some grass, and gradually remove the cover after the seedlings emerge.

2. Transplanting: When larkspur grows 2 true leaves, transplant it with soil into a small pot, and change the pot once more after the seedling grows larger.

3. Watering: Watering larkspur should follow the principle of watering when dry and stopping when wet. During the flowering period, water a little more appropriately to avoid the soil becoming too dry.

4. Fertilizing: When changing pots for larkspur, apply dry manure as a base fertilizer. Afterward, according to the growth situation, apply 1-3 times per month of decomposed cake fertilizer water.

5. Height control: After changing pots for larkspur, use paclobutrazol to control plant height. The specific method is to apply 0.5% paclobutrazol once every 2 weeks.

6. Seed collection: Larkspur seeds should be collected in time to prevent the seed capsules from splitting after ripening.

7. Diseases: Common diseases of larkspur include black spot, crown rot, and chrysanthemum leaf nematode disease, which damage leaves, flower buds, and stems. They can be prevented and controlled by spraying 500 times dilution of 30% thiophanate wettable powder.

8. Pests: Common pests of larkspur include aphids and noctuid moths. Spray and kill them with 2000 times dilution of 10% chlordimeform emulsifiable concentrate.