How long does the peony seed germinate? It will begin to germinate around the vernal equinox next year.

Peony flowers are colorful, jade smiling pearls are fragrant, romantic and elegant, and are known as "the king of flowers". So how long does it take for peony seeds to germinate?

How long does the peony seed germinate? 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.

Matters needing attention in peony sowing:

1, sowing time

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.

2. Seed selection and treatment

In order to eliminate the influence of withered seeds on germination rate, the picked seeds can be soaked in clean water for 65438 0-2 hours, and then the impurities floating on the water surface and withered seeds can be removed, and the full seeds submerged in water can be used for sowing.

Water permeability and air permeability of peony seed coat are important factors affecting seed germination. Before sowing, seeds can be soaked in warm water at 50℃ for 24-48 hours, or soaked in 95 {BF} alcohol for 30 minutes, or soaked in concentrated sulfuric acid for 2-3 minutes, which can soften the seed coat and promote germination. But the seeds must be washed with water after soaking.

Peony growth habits Peony likes a warm, cool, dry and sunny environment. Like sunshine, but also resistant to semi-shade, cold, drought, weak alkali, avoid water, heat and direct sunlight. Suitable for growth in loose, deep, fertile, dry and well-drained neutral sandy loam. Poor growth in acidic or cohesive soil. [7]

Adequate sunshine is beneficial to the growth of peony, but it is not resistant to summer sun, and the temperature above 25℃ will make the plant dormant. The optimum flowering temperature is 17-20℃, but it must be treated at low temperature of 1- 10℃ for 2-3 months before flowering. The lowest temperature is -30℃, but appropriate cold-proof measures should be taken in winter in the northern cold area to avoid freezing injury. The high temperature and high humidity weather in the south is extremely unfavorable to the growth of peony. Therefore, in order to enjoy the beauty of peony flowers in the south, we must give specific environmental conditions.