Breeding mode of delphinium: sowing
The optimum germination temperature of delphinium is about 65438 05℃, and the soil temperature is below 20℃, and it germinates in about two weeks.
Autumn sowing time is from late August to early September. Seedbeds are sown in the open field first, and then enter the cold bed or cold room for wintering before winter, and then sow in warm spring. In early spring in the south, seedlings are directly sown in the open field, and the spacing between plants is 25~5 cm.
In the north, seedlings are generally raised in advance, and 2-4 real leaves are transplanted in April, and 4-7 real leaves are sown. Pay attention to drainage in rainy days.
The soil must be kept moist after sowing. The easiest way is to cover some grass and gradually remove the cover after seedling emergence.
Propagation mode of delphinium: cutting
Cutting propagation of delphinium is carried out in spring. When the new branches grow above 15cm, the cuttings are cut and inserted into the sand.
Don't rush to water after inserting sand, and water it properly after 2-3 days.
Propagation mode of delphinium: ramet
Both spring and autumn are fine. When the new buds grow to 15- 18 cm in spring, the plants should be transplanted after rooting, or cuttings should be taken from the base after flowering.
Pay attention to fate when dividing plants. Some delphinium does not grow new buds for 3 years, and some delphinium 1 year grows many seedlings, which are close to the base of the mother plant.
Generally, plant division is carried out once every 2-3 years, otherwise it is easy to lose the vitality of the mother plant. Just after Mother's Day, we also give more care to the mother plant of Delphinium, and let her spend more time with her children, so that the children will be strong after independence!
Whether it is sowing, cutting or ramet propagation, we should pay attention to the lodging problem of plants. Delphinium delphinium's main stem is tall, which is easy to grow in white due to insufficient light, and the main stem is easy to lodging or bending. After growing to a certain stage, attention should be paid to supporting and fixing, and the main stem can be gently tied with twigs, wooden sticks or bamboo poles. Remember not to use force to avoid hurting the stem skin.