What weather is suitable for planting five-needle pine seeds?

Five needles pine seeds were sown before and after Qingming, when the weather and temperature were very high. Otherwise, the temperature is low and the germination is slow.

Seeding and propagation of Pinus quinquefolius;

1. seed treatment: the seed coat of Pinus quinquefasciatus is thick and hard, which is not easy to germinate and needs proper treatment. 20 days before sowing, soak the seeds in warm water at 50-60℃ for 3-4 hours, then take them out and mix them with twice the amount of wet sand, put them in a flowerpot (or wooden box), cover them with a layer of wet sand, and put them in a cool place to accelerate germination.

2. Sowing time: You can sow in March and April. However, from late March to early April, that is, around Qingming, it is the most suitable. When the temperature is too low, it will germinate slowly and too late, and the seedling growth period will be shortened.

3. Pot for sowing: Generally, the seeds of Pinus pentaphylla are not easy to get, which is more precious. It is appropriate to sow in a pot. A clay basin with good permeability is better. The shallow mud basin with a height of 10 cm and a diameter of 30 cm is adopted, and the effect is very good.

4. Sowing soil: mountain mud is preferred. If there is no mountain mud, as long as it is loose, breathable, well drained and slightly acidic. Culture soil must be disinfected. Use 50% carbendazim per 100 kg soil. 5 kg, fully and evenly mixed, and then sieved for later use.

5. Sowing method: first cover the drainage hole with tiles, then spread a layer of rubble, then fill in the culture soil, put down the large-grained soil, put on the fine-grained soil, then level the soil surface, and sow the seeds evenly on the soil surface, with a spacing of about 4 cm between each seed. Do not sow beside the basin. The covering thickness is about 65438±0cm to keep uniform. After covering the soil, gently press it with a flat plate to make the soil closely connected with the seeds. After compaction, it is covered with a layer of mountain moss, which plays the role of heat preservation and humidification and is beneficial to germination. Finally, spray enough water with a fine-hole watering can or soak it in a basin and put it in a cool place indoors or outdoors. After sowing, always check the humidity of the basin soil, and spray water with a fine-hole watering can in time when it is dry. Don't let the pot soil be too dry or wet. You can get a little wet at first, and then don't have too much water.