Water immersion treatment

The seeds of Bauhinia, pearl plum, brocade and other flowers have a short dormancy period and are easy to germinate. They can be directly sown after soaking in warm water of 40 degrees to 60 degrees for 1-2 days. Some flower seeds have colloidal and waxy seed coats, such as torch tree. First soak the seeds in 90 degree water and cool them naturally for 24 hours to soften and absorb water, so as to promote seed germination

Precautions

When treating seeds with water immersion method, change the water frequently. The time when the water temperature exceeds 60-90 degrees should not exceed half an hour or an hour, and then reduce the water temperature to below 40 degrees, otherwise the seed embryo is easy to die

Low temperature treatment

Rosa roxburghii, Chimonanthus praecox, Forsythia suspensa, clove and some Autumn Sown herbal flowers need a certain period of low temperature (the temperature is between 0-10 degrees) to break the dormancy of seed embryos and promote seed germination

Operation method

Mix the seeds with the sand with a humidity of 60%, put them into the plastic bag, tighten the mouth of the bag, put them into the flowerpot, and then bury the whole flowerpot in the open field 40-60 cm deep. Or you can put the seeds in a 3-5 degree refrigerator for two or three months until spring. It can also be sown in autumn and germinate in the next spring after natural freezing in winter

Variable temperature treatment

The seeds of tassel, peony, peony and other flowers have the habit of double dormancy of radicle and hypocotyl. The radicle needs to break dormancy for one month or more under the condition of 25-32 degrees, and the hypocotyl needs to break dormancy for one month or more under the condition of 3-5 degrees. When dealing with such seeds, they should be mixed with wet sand before sowing, and then turn to low temperature after a period of high temperature

Precautions

When the seeds are treated with variable temperature, it is necessary to ensure that the time of high temperature period and freezing period is sufficient, otherwise it is difficult for the seeds to emerge after sowing< span>