In order to ensure the freshness and nutrition of the soil, it is necessary to change the pots and soil around one year. However, it is not enough to change all the soil within one year, and it can be changed gradually. The time of basin change should be well chosen. It can be chosen in March in spring. The climate is very suitable, which is also beneficial for recovery.
Pour over the potted plants of tangerine in four seasons and tap the soil around them gently, so that they can be loosened and the plants can be taken out easily. Use a sharp knife to cut off the old roots outside. Don't hurt the main roots. It is not only necessary to prune the roots, but also the branches on the plants. Cutting off the branches that are too dense or weak in growth can reduce the consumption of nutrients.
One third of the soil in the flowerpot can be replaced, and the remaining 2 /3 needs to be reconstituted. It prefers fertilizer. The newly prepared soil should be loose and airy, with good drainage. It can be mixed with garden soil, river sand, vermiculite, etc., and should be exposed to the sun and sterilized before use.
Fill part of the pot with soil, then straighten the tangerines, plant them in the pot, and fill the surrounding with soil. After planting, it shall be placed in a cool and ventilated place for later maintenance.
