How to sprout flower seeds?

1. Flooding treatment. Seeds with short dormant period and easy to germinate, such as Bauhinia and Pearl Plum, can be sowed directly by soaking them in warm water of 40 ℃-60 ℃ for 2 days. The seeds of torch tree should be soaked in 90 ℃ water and then cooled naturally for 24 hours so that the gelatinous and waxy seed coat can be softened and absorbed before sowing. Pay attention to the use of water immersion method to deal with seeds, it is necessary to change water frequently, the time when the water temperature is higher than 60 ℃ should not exceed 1 hour, otherwise the seed embryo is easy to die.

two。 Low temperature treatment. Some flower seeds, such as Rosa roxburghii, Chimonanthus praecox, cloves and some herbaceous flowers sown in autumn, need to be treated with low temperature (0 ℃-10 ℃) for a certain time before they can break the dormancy of seed embryos and germinate. Methods: first mix the seeds with sand with 60% humidity (squeeze into a ball with your hand, release it and then disperse it), then put it in a plastic bag, tie the mouth tightly, put it in a flowerpot, and then bury it in an open field 40-60 cm deep. You can also put the seeds in a 3 ℃-5 ℃ refrigerator for 60-90 days and sow them in spring. It can also be sown in autumn so that the seeds can be naturally frozen outdoors in winter and germinated and unearthed the following spring.