When is the seed planted?

Platycodon grandiflorum is a common flower that blossoms in the shape of a bell. Many people will plant Platycodon grandiflorum, so when will Platycodon grandiflorum be sown?

When will Platycodon grandiflorum flower sow

Winter sowing from November to January of the following year, spring sowing from March to April. It is better to sow in winter, generally using sowing. When sowing, sow the seeds well with tidal fine sand (1 pot of soil mixed with 0.3kg seeds) on the border surface, sweep them gently with a broom, and apply shock pressure to the degree of not seeing the seeds (that is, the thickness of the soil cover is about 2.5-3 mm). The following spring, the seedlings emerged early. In spring sowing, in order to make the seedlings emerge neatly, the seeds must be treated or soaked with cover grass after sowing (treatment method: soak the seeds in 30 ℃ warm water, soak them out for 8 hours, wrap them in a wet cloth, put them in a place of 25: 30 ℃, cover them with wet hemp slices, accelerate germination, and rinse and filter with warm water once a day. It takes about 5 days for the seeds to germinate and sow. The sowing method is the same as that of winter sowing, keep the soil moist for a long time, and generally emerge in about 15 days. The seed consumption per mu is 2.5kg.

2. Planting techniques of Platycodon grandiflorum

1. Seedling raising: Platycodon grandiflorum seedlings can be transplanted from April to June, too early, because the small size of Platycodon grandiflorum seedlings affects the quality of seedlings, too late seedlings greatly affect transplanting, the general amount of seeds per mu 10~12kg (some experimental fields according to 15kg). Specific method: select the land neither in the high slope nor in the low-lying field, it is best to choose the field with good drainage, the land should be cultivated carefully, the bottom fertilizer should be applied, the border should be turned more than one and a half feet deep, and the border surface should be adjusted to facilitate sprinkler irrigation in case of drought. Then the Platycodon grandiflorum seeds are mixed with fine soil and sowed evenly, slightly under shock pressure, covered with weeds, and keep the soil moist. Generally, seedlings can emerge in 10 days and 12 days after emergence. Choose rainy days to remove mulch to facilitate seedling growth.

two。 Transplanting: the growth period is 1 year. One-year-old Platycodon grandiflorum seedlings were selected before sprouting from autumn and winter of that year to spring of the following year, and were graded and planted respectively. When planting, the trench of 25cm was opened according to the row spacing 20cm, and then the Platycodon grandiflorum seedlings were obliquely inserted into the ditch at an angle of 75 °. According to the plant spacing 6~8cm, the soil cover should be slightly higher than the seedling 3cm.

3. Weeding: after emergence of Platycodon grandiflorum, weeding is carried out, weak seedlings are removed between 4 leaves, seedlings are fixed according to plant spacing of 1 to 2 inches when 6 leaves are 8 leaves, shallow loosening soil is carried out when dry and wet is suitable, and there are no weeds in the field.

4. Drainage: Platycodon grandiflorum has high planting density and is afraid of stagnant water. Therefore, in the hot and humid plum rain season, we should timely dredge ditches and drainage to prevent stagnant water from rotting roots.

5. Picking flowers: the flowering period of Platycodon grandiflorum is as long as 4 months, which consumes a lot of nutrients and is easy to sprout lateral branches. Therefore, flower picking is an important measure to increase the yield of Platycodon grandiflorum.

Platycodon grandiflorum flower is very fresh and elegant, very suitable for family planting and ornamental, and Platycodon grandiflorum flower picked, but also can be made into flower arrangement, has a very high ornamental value.