Usually after the soil hardens in the early stage of growing flowers, the topsoil will be watered directly and cannot be penetrated. After we water it, a small pool will be formed from the soil surface to the edge of the pot, and it will be difficult for the water to flow down. penetration. If this happens, we can artificially solve it, because the soil inside is relatively better, but the soil on the surface is hardened. We can add some fermented sheep dung and cow dung in powder form. , then sprinkle it on the surface of the pot soil, use a small rake to loosen the surface soil, and mix the soil and sheep manure together. In this way, when watering, the nutrients of the sheep manure can slowly penetrate into the pot soil.
The soil is seriously compacted. Even if you loosen the soil and water it, it cannot be watered thoroughly. It is best to change the potting soil. If you don't want to change the potting soil, dig a hole in the soil next time. Adding some organic microorganisms can increase the activity of the soil and improve the soil's aggregate structure, which can also effectively improve it.
If the water quality in the north is relatively alkaline, and the soil is alkaline, we want to grow acidic flowers. If we want to prevent the soil from becoming seriously alkaline, we can regularly water it with ferrous sulfate once a month and water it with ferrous sulfate. When the iron is dissolved in water, be sure to add 2 to 3 drops of rice vinegar into the water to prevent your ferrous sulfate from oxidizing.
