Seed selection: choose big, full and healthy seeds, soak them in warm water for 2 hours, and then accelerate germination with wet towels.
Soil preparation: use loose soil rich in humus and plant it in outdoor high places.
Planting: Scatter the seeds evenly in the soil, control the bud temperature above 65438 05℃ after covering the soil, and transplant the seedlings when they grow 2-4 true leaves.
First, planting time
After the fruits of delphinium are ripe, they can be harvested in June. After the seeds are taken out, they can be dried, dried and preserved in a well-ventilated place, and can be planted next year. Delphinium can be planted in spring and autumn, usually in August-September in autumn. If it is planted too late, the germination rate will be affected because of the low temperature.
Second, choose seeds.
When planting delphinium, large, full and healthy seeds should be selected, and the seed quality is high enough to have a higher germination rate. Soak seeds before sowing to accelerate germination. First soak the seeds in warm water for about 2 hours, then take them out and put them in a wet towel to accelerate germination.
Third, prepare the soil
If potted, it is better to choose loose soil with good drainage and rich humus, which is more conducive to its growth. If you plant it outdoors, you should choose plants with higher ground. If planted in a depression, it may be soaked by rain in rainy season, which will affect the growth of plants.
Fourth, planting
When planting, you can use the direct seeding method to evenly scatter the seeds into the soil. Don't sow too closely, otherwise the seedlings will be crowded when they grow out, and they will grow poorly because of insufficient nutrition. After planting, the temperature should be controlled, and the germination temperature should be controlled above 65438 05℃. When sowing in autumn, the seeds will germinate in about 15-25 days. Create a scattered light and ventilated environment for it after planting, and don't expose it to the sun. When the seedlings grow 2-4 true leaves, they can be transplanted.