When are peony seeds planted?

The sowing time of peony is generally from late August (summer) to early September (white dew), which will affect the germination rate of seeds too early or too late. The dependence of peony seed germination on seasons may reflect its optimum temperature. Some peony seeds germinate best at 65438 05℃, which is very close to the temperature at which peony seeds emerge from September to June. In addition, the in vitro embryos of "Feng Dan" seeds inoculated in sterile medium have no growth reaction at 5℃, but grow slowly at 65438 05℃ and rapidly at 65438 05℃, but tend to grow callus at 20℃. If it is impossible to sow immediately for other reasons, the seeds should be mixed with fine sand and piled indoors or put into a soil basin to store sand. During sand storage, it should be kept moist, and the sand storage time should not exceed 65,438+05-20 days. Seeds must be sown when they take root.

Peony generally begins to take root 35-40 days after sowing, and begins to sprout around the vernal equinox in the following year. At this time, the ground temperature is about 4-5℃, and the ground grows around Qingming. In early May, the seedling height was 3-3- 125px, and three leaflets were planted to enter the seedling stage.