First of all, the most suitable germination temperature is 21-22 ℃, so the time is generally in September. Prepare the soil for the flowerpot and water it the day before.
The seeds of Dianthus caryophyllus are small and easy to germinate. The step of soaking seeds can be omitted. Spread the seeds evenly on the basin soil, and then cover it with a layer of washing sand, and pour a little water (don't pour too much, it has been watered before).
After sowing 5 days will sprout, 10 days or so can grow seedlings, control the temperature in 10 ~ 20 ℃. When the seedlings grow 4-5 leaves, they can be transplanted and replanted in September of the next year.
Cutting is generally carried out in October or February to March, and it is recommended to be carried out indoors in the northern region.
Remove the strong and slightly lignified branches in the middle of the plant, 6-9cm long, and insert them into the basin soil. As for flowerpots and soils, there is no special requirement. If vermiculite is added to the flowerpots, the water holding capacity can be increased. After cutting, the temperature should be controlled at 10 ~ 13 ℃ for about 20 days. In the cutting process, if the indoor temperature and humidity are low, you can put plastic bags on the flowerpot to keep moisture.
After the survival of young seedlings, the heart should be removed in time to promote branches; more fertilization. Once a week, thin liquid fertilizer, promote growth, blooming. If properly maintained, the cuttings will bloom the next year.
Ramet refers to reproduction of old plants in autumn or early spring.
Take the plant out of the basin, take out the soil at the root, and divide the old plant into equal parts by hand, 2-3 plants in each cluster. If the roots grow tiller bud seedlings, you can break off the planting.
If the plants are divided in early spring, they are mainly watered in summer to ensure that the basin soil is wet without ponding; after September, fertilization and water supply can basically blossom in October. In addition, it should be noted that the root system of newly divided plants has not been recovered yet. It is easy to burn the root without heavy fertilizer and water.