There are specifics in seed germination
In order to elaborate on the relevant knowledge of flower propagation for concerned netizens, seed germination is a meticulous process. Next, the editor will introduce it.
Different types of flowers, due to their different seed coat structures and physiological mechanisms, have different seed germination periods. For example, as long as seeds of flowers like Chinese rose, China aster, and annual pink are sown on time, they can quickly sprout, while some flowers may take several months or even years to germinate. Therefore, artificial seed germination must be carried out to shorten the dormancy period of seeds.
1. Water immersion treatment: For seeds with a short dormancy period and easy germination, such as Chinese redbud, pearl梅花, and锦带花, soak the seeds in warm water at 40°C to 60°C for 1 to 2 days before sowing directly. For seeds like torch trees, initially soak them in 90°C water, let them cool naturally for 24 hours, to soften and absorb water the gelatinous and waxy seed coats, and then germinate. However, when using the water immersion method to treat seeds, it is necessary to change the water frequently, and the time with water temperature above 60°C to 90°C should not exceed 0.5 to 1 hour, then lower the water temperature to below 40°C, otherwise the seed embryo may die.
2. Low-temperature treatment: Some flower seeds, such as thorn pear, wax plum, forsythia, syringa, and some autumn-sown herbaceous flowers, need to go through a certain period of low temperature (0°C to 10°C) treatment to promote maturity and break the dormancy of the seed embryo for germination. The method is: mix the seeds with sand at 60% humidity (i.e., it can be formed into a ball with the hand and then scattered when released), then put them in a plastic bag, tie the opening tightly, place the bag in a flowerpot, and bury the pot in the ground 40 to 60 centimeters deep, or place the seeds in a refrigerator at 3°C to 5°C for 60 to 90 days, and then sow in spring. Alternatively, seeds can be sown in autumn to let them go through natural freezing outdoors during winter and germinate the following spring.
3. Temperature alternating treatment: Some flower seeds, such as flowing beard, peony, and herbaceous peony, have the habit of double dormancy of both radicle and plumule, meaning that their radicle (the part of the seed embryo that develops into the root) needs to pass through a temperature stage of 25°C to 32°C for 1 to 2 months or even longer to break dormancy, while the plumule needs to be in a temperature of 3°C to 5°C for 1 to 3 months to break dormancy. For these seeds, before sowing, they must be mixed with wet sand, go through a period of high temperature, then switch to low temperature, and after temperature alternating treatment, they can germinate quickly in spring. However, it is necessary to ensure the duration of the high temperature and freezing periods during the treatment, otherwise the seeds will still find it difficult to sprout after sowing.
The comprehensive knowledge explanation of the specifics in seed germination shared above is hoped to be of help to you.