Pot planting method of Platycodon grandiflorum when does Platycodon grandiflorum bloom

Platycodon grandiflorum flower is a very ornamental plant, in addition, its effect is also very strong, the root can be used as medicine, so it is very popular with consumers. Many people like to raise some at home, so when breeding, they also need to learn a lot of skills, so as to ensure its growth.

Pot planting method of Platycodon grandiflorum

1. Seed screening. The seeds produced by 2-year-old Platycodon grandiflorum were of the same size, full and pure color. The screened seeds were exposed to the sun for 1 to 2 days in order to break dormancy and kill parasitic fungi on the seed surface.

2. Seed treatment. In order to further improve the germination rate of seeds in pot culture, the selected seeds were soaked with 100mg/LGA3 or 20%PEG6000 for 10 h, soaked for 10 h, picked out after soaking, wrapped with gauze and germinated in the dark condition of incubator 25 for 10 h, and then ready to sow.

3. Pot loading and fertilization. Pot size: the diameter is 33cm28cm, so that the container can meet the requirements of root development of Platycodon grandiflorum. The screened sandy loam with high organic matter content and no pollution was fully mixed and quantitatively loaded into each basin. Because the seeds of Platycodon grandiflorum are small and do not tolerate drought at the initial stage of planting, the soil in the basin should be sifted fine before planting to improve the ability of soil water and fertilizer conservation and be beneficial to the development of root system. First, lay a layer of pebbles at the bottom of the basin and wrap it with a newspaper, and insert a hard plastic pipe into the newspaper along the edge of the basin. Among the common fertilizers, phosphate fertilizer should be fully applied at one time, while nitrogen fertilizer and potassium fertilizer should be used in proportion, and topdressing can be applied according to their growth conditions in the later stage of growth. The initial base fertilizer should be fully mixed with the soil in the basin and loaded into the basin.

When does Platycodon grandiflorum blossom

The flowering stage of Platycodon grandiflorum is relatively late, and there are one or more blue or blue-purple flowers at the top of the stem from July to September. When they bud, they swell in a balloon shape. Corolla bell-shaped, the apex five-lobed, drooping very much like the ancient bell, so it is also called bell-shaped flowers. Results from August to October.

Matters needing attention in pot culture of Platycodon grandiflorum

1. Change the basin soil in time: Platycodon grandiflorum should not be watered 1-2 days before changing the basin, which is beneficial to the separation of the basin soil from the basin wall. When changing the basin, take the plant out of the basin, shake off 20% or 50% of the old soil from the root, cut off the withered and rotten roots, add a small amount of aloe residue at the bottom of the new pot, put the shoveled soil in the middle of the pot, and finally fill the flowerpot with new soil.

2. Control the temperature: shade properly before and after flowering to prolong the flowering period. After the flower fades, cut off the aboveground part before winter to reduce the consumption of nutrients and put it in a sunny position with a slightly warmer flower stem. Try not to let the roots of Platycodon grandiflorum frostbite. The old root will continue to sprout new branches next year.

Pest control of Platycodon grandiflorum

1. Platycodon grandiflorum pests in fact, Platycodon grandiflorum rarely suffers from bugs at home, but when the home environment is muggy, humid, or dry, the bugs can easily exploit loopholes. Root nematode disease root knot nematode is mainly concentrated in the root, gnawing on the root for a living, when there are pests, the root has disease protuberance, the aboveground stems and leaves withered early. It is found that root-knot nematode can reduce the harm to a certain extent by burying cake fertilizer in the soil and increasing soil fertility without spraying pesticides. If the pest is serious, it is recommended to remove the plant from the pot outdoors and replace it with new soil. The ground beetle is also harmful to the root of the plant, which usually appears from March to April and is sprayed with 800-fold solution of trichlorfon in time. Usually open the window after the meeting should also pay attention to avoid flying into pests from the window.

2. Platycodon grandiflorum disease. Purple stripe plume caused serious damage in mid-September and root rot in October. The root of the injured plant turned red at the initial stage, and gradually formed a network of reddish-brown hyphae, of course, these were all underground changes in the early stage. In the later stage, the soil surface will bulge, purple sclerotia the size of mung beans will appear, and the stems and leaves will die gradually. Prevention and control methods: turn the basin and change the soil every year, renew the soil, and disinfect it in time. Once the disease is found, the diseased plant can be removed in time, and 5% lime water can be irrigated for disinfection.

Platycodon grandiflorum pot planting method is relatively simple, first of all, the seeds and pots for disinfection, and then timely add fertilizer. Platycodon grandiflorum in the pot to control its temperature, so that the survival rate will be high. In the later stage, pest control should be carried out to prevent Platycodon grandiflorum flowers from being attacked by insect pests.