How to disinfect potting soil for flowers? These methods all work well

If you want to grow flowers well, the soil is key. Disinfect and sterilize like this, and only without root rot will they grow vigorously

The soil for growing flowers needs to be disinfected, because if there are too many mixed microbes in the soil, it will cause root rot and necrosis, and then it is quite difficult to grow flowers well in pots. However, if there are too many anaerobic bacteria in the soil, the soil will stink, which is very bad for potted ornamental flowers. Besides sterilization, you also need to kill insects. Many flower lovers end up with a bunch of bizarre-looking bugs crawling out of their potted flowers, which seriously ruins the mood for enjoying the flowers.

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Generally, the simplest and easiest method is to put the flower soil on the ground and expose it to the sun. This can not only sterilize but also kill insects. Most insects like damp and shady environments. Sun exposure can not only kill the insects in the soil but also repel pests, and can even kill some insect eggs, so sun exposure is the simplest and most effective method. Of course, there are also methods such as steaming or boiling the flower soil for pots at high temperature, or scalding it with boiling water, for example, putting it in a microwave to sterilize and kill insects at high temperature, or finding an old large pot and steaming or stir-frying it, all with very good results. However, this is suitable for small batches of potted flowers. If done this way for a large number of flowers, the cost is high, it is too cumbersome, and it is not very practical, so sun exposure is a good method.

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Besides sun exposure, there is adding fungicides or insecticides. Generally, the fungicide used in flower nurseries is carbendazim. Sprinkle the carbendazim in, then mix it evenly. Potassium permanganate liquid also works. There are many insecticides, including granular insecticides and liquid ones. Granular ones can just be sprinkled in, and liquid ones can be sprayed, then mix the soil evenly. Of course, if the potting soil has already been prepared, after the flower seedlings are potted, you can also water them with insecticide and fungicide, and there is no problem with that. If growing flowers indoors, I think this point is very important. Do not let the potting soil become smelly or produce insects in the end; at that point it will not be so good.

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Generally, the old soil from our pots, garden soil dug up, and leaf mold are often prone to mixed microbes and insects. If you find killing insects and sterilizing too troublesome, you can buy artificial substrates, such as peat, perlite, coconut coir, etc. These substrates, when combined and mixed, are completely sterile and non-toxic, so you can avoid all that trouble.