Cactus Astrophytum Asterias
1、 Selection of Flower Pots
If planting on the planet, it is necessary to choose a dedicated planting pot, which is convenient and fast, has good water permeability, and will not affect the growth of seedlings.
2、 Selection and usage methods of potted soil
It is suitable to choose sand with good drainage, certain ventilation, and rich calcareous content for planting. The specific operation is as follows:
The first step is to cover the bottom of the soil with a thicker layer of coal slag, which can effectively block the excess water at the bottom.
Before applying soil, it is necessary to filter and screen the potted soil, remove some soil with larger particles, and then put it into a flower pot. Cover it with a thin layer of delicate sand, which can be gently shaken to make the soil more compact.
3、 Proper disinfection work
Before sowing, it is necessary to disinfect the soil in the pot. It is recommended to use potassium permanganate. The concentration can vary depending on the color, and it is best to present a transparent red color. If it is too strong, it will cause the seeds to be burned, and if it is too weak, it will not have the effect of disinfection.
Soak the flowerpot in a pre mixed disinfectant solution to allow the soil to fully absorb potassium permanganate. Once the topsoil is moistened, it can be removed. Drain the excess water and let it sit for two to four hours before sowing.
4、 Sowing method
Seeds can be sown one by one, making it particularly convenient to move seedlings in the future. Now, make a small hole in the soil and put the seeds inside. It is also possible to directly sow on the surface of the soil, but it needs to be more uniform.
5、 Post management
After sowing, spray a disinfectant solution and choose fungicides such as "carbendazim" or "methylthiophanate". Dilute and spray evenly according to a scientific ratio, and remember to cover the lid after completion.
Place the seedling pot in a place with a temperature of 33 ℃ and maintain a temperature difference of 15 ℃ or above between day and night. Some seeds take a longer time to sprout, usually about a week later. If they don't sprout after a week, they basically won't sprout.
If you are using a mud pot, pottery pot, or plastic pot for sowing, you can choose to cover it with a layer of cling film after sowing. This not only increases the humidity and temperature of the surrounding environment, but also effectively helps the seedlings isolate external bacteria and pests.
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