FLS002 Delphinium flower Seed (200 seeds/bag)

       Delphinium flower seeds, with 200 seeds in each pack. The seeds are dark brown, approximately elliptical in shape, small in size, and have fine textures on the surface. Delphinium is a perennial herbaceous flower. The plant is tall and straight, usually ranging from 30 to 120 centimeters in height. Its leaves are palmately divided, and the lobes are slender, as light and beautiful as feathers. The flowers are in a raceme, with a unique flower shape, just like a group of swallows about to fly, hence the name. The flower colors are rich and diverse, including blue, purple, pink, white, etc., with bright and layered colors, and it has extremely high ornamental value. It is often used for the layout of flower beds and flower borders, and is also suitable as a cut - flower material, adding a romantic and elegant atmosphere to indoor and outdoor environments.

1. Soil preparation: Select loose, fertile, well - drained soil rich in humus, with a pH value maintained between 6.0 - 7.5. Mix leaf mold, garden soil, and river sand in a ratio of 3:2:1 evenly and put it into a seed - raising pot or planting container. Before filling the soil, lay a layer of broken tiles or ceramsite at the bottom of the container to enhance drainage performance. Then water it thoroughly to make the soil in a moist but not waterlogged state.

2. Seed treatment: To improve the germination rate, soak the seeds in warm water for 5 - 6 hours to allow the seeds to fully absorb water. After soaking, take out the seeds, wrap them with a damp cloth, and place them in a warm (20 - 25℃), well - ventilated place for germination. Rinse them with clean water once a day. After about 2 - 3 days, when some seeds show white, they can be sown.

3. Sowing operation: Evenly sprinkle the germinated seeds on the soil surface. Try to make the seeds evenly distributed, keeping the seed spacing at about 2 - 3 cm to avoid overcrowding. After sowing, cover a thin layer of soil about 0.5 cm thick, and then gently compact the soil to make the seeds closely contact the soil.

4. Moisture and light preservation: After sowing, use a sprayer to gently spray water to keep the soil moist. Cover a layer of plastic film or plastic wrap on the seed - raising pot or planting container to maintain humidity and temperature. Place it in a brightly lit place but avoid direct sunlight. The suitable germination temperature is 15 - 20℃. Open the film for ventilation for 1 - 2 hours every day to prevent the seeds from mildewing due to excessive humidity.

5. Management after emergence: Generally, the seeds begin to emerge about 7 - 10 days after sowing. After emergence, remove the covered film in time and gradually increase the light duration, but avoid direct strong light to prevent burning the seedlings. Keep the soil moist, following the principle of "watering when the soil is dry". That is, when the soil surface is dry 2 - 3 cm, water it, and water thoroughly each time. When the seedlings have 2 - 3 true leaves, thin out the seedlings, remove the weak and over - dense seedlings, and keep the strong seedlings to provide sufficient growth space for them. When the seedlings have 4 - 5 true leaves, they can be transplanted into a larger flowerpot or planting area. Try to transplant with soil clumps to protect the roots of the seedlings.

a. Temperature requirements: The germination of delphinium seeds and the growth of seedlings are relatively sensitive to temperature. If the temperature is too low, the seeds germinate slowly or do not germinate at all; if the temperature is too high, the seedlings are prone to spindly growth and weakness. When sowing in early spring or late autumn, take heat - preservation measures, such as covering with plastic film; in high - temperature summer, pay attention to shading and cooling to avoid the excessive temperature from affecting seed germination and seedling growth.

b. Light management: Delphiniums need sufficient light for photosynthesis, but in the initial stage of seed germination and the seedling stage, too strong direct light will damage the seedlings. After emergence, gradually increase the light duration, but in the high - temperature period of summer, especially at noon, appropriate shading is required to avoid direct strong light. As the plant grows, the light intensity can be gradually increased to promote the robust growth and flower bud differentiation of the plant.

c. Water control: From sowing to emergence, keep the soil moist, but there should be no waterlogging, otherwise the seeds are easy to rot. After emergence, water the plants reasonably according to the dry - wet condition of the soil. Avoid over - watering, which may cause root hypoxia and rot, and also prevent the soil from being too dry, which will affect the growth of the plants. Generally, water when the soil surface is dry 2 - 3 cm, and water thoroughly.

d. Fertilization points: In the initial stage of delphinium seedling growth, a small amount of thin nitrogen fertilizer can be applied appropriately to promote the growth of the plant's stems and leaves. When the plant grows to a certain stage and enters the vigorous growth period, the application amount of phosphorus - potassium fertilizer, such as potassium dihydrogen phosphate solution, should be increased to promote the branching of the plant and flower bud differentiation, and improve the flower quality. When fertilizing, pay attention to applying thin fertilizers frequently to avoid burning the roots with concentrated fertilizers.

e. Pest and disease control: Common pests and diseases of delphiniums include powdery mildew, black spot, aphids, red spiders, etc. Keep the planting environment well - ventilated, regularly clean up diseased leaves and plants, and reduce the breeding environment of pests and diseases. Regularly check the plants. Once pests and diseases are found, take corresponding control measures in a timely manner. For powdery mildew and black spot, fungicides such as carbendazim and chlorothalonil can be used for spray control; for aphids and red spiders, insecticides such as imidacloprid and abamectin can be used for control.