Adjusting the timing and method of repotting cacti: changing the soil of cacti and adjusting the timing and method of repotting.

Cactus Repotting Time and Method

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Cactus Repotting Time and Method

Generally, spring and autumn are the best seasons for repotting cacti, with the specific repotting time around March in spring or September in autumn. These times coincide with the cactus's vigorous growth period, making repotting easier. Usually, 2-3 days before repotting a cactus, stop watering to keep the potting mix slightly dry, making the pot change more convenient.

Cactus Repotting Time

Generally, spring and autumn are the best times for repotting cacti, with the specific repotting time around March in spring or September in autumn. These times are when the cactus is in a vigorous growth period, and it is easy for the plant to survive after repotting.

Cacti usually need to be repotted every one to two years because after a year or two of growth, the nutrients in the pot are exhausted, the soil becomes acidic, and some parts may even harden, affecting the extension and absorption of nutrients by the cactus roots.

Cactus Repotting Method

Soil Preparation

Cacti prefer well-draining, breathable, and calcareous soil, preferably sandy loam. When preparing the mix, you can use coarse sand, akadama soil, wood ash, coal ash, volcanic rocks, vermiculite, and coconut coir. Specifically, you can mix akadama soil, coarse sand, and coconut coir in a ratio of 3:2:2.

Bottom Fertilizer

When repotting a cactus, a small amount of base fertilizer can be applied at the bottom of the pot, such as horse hoof, soybean cake, or sesame cake residue. These fertilizers can provide sufficient nutrients for the cactus, promoting root growth and overall growth.

Pot Removal

When repotting a cactus, first gently tap the sides of the pot to loosen the soil, then remove the cactus. After that, gently shake off the topsoil and check the root condition, cutting off any decayed roots.

Potting

Try to replace the original potting mix of the cactus with a suitable soil for its growth, apply enough base fertilizer, then replant the cactus. Also, water it once for the initial planting, place it in a cool and well-ventilated area for a few days, and it can then be grown normally.

Points to Consider When Repotting Cacti

1. Generally, stop watering the cactus 2-3 days before repotting to keep the potting mix slightly dry, making the pot change more convenient.

2. Cut off some of the old roots when repotting, let them dry for 2-3 days before potting, remove some of the old soil, and add new growing soil.

3. Cacti are covered with spines, so wear gloves when repotting to avoid injury.

Key Points for Cactus Care After Repotting

1. Semi-shaded and well-ventilated

After repotting a cactus, it is best to place the plant in a semi-shaded and well-ventilated environment for a while, and then resume normal care after the growth recovers.

2. Suitable temperature

Keep the temperature around 25 degrees Celsius. In summer, when it's hot, promptly provide shade and cool the plant. In winter, when the temperature is low, take measures to increase the temperature to help the cactus grow better.

3. Reasonable watering

After repotting a cactus, do not water too much because cacti have low water requirements, and their roots are脆弱 after repotting. If too much water is given at this time, it can accumulate in the soil, hindering root respiration, affecting normal root function, and even causing root rot, which is not conducive to plant growth.

4. Suitable lighting

After repotting a cactus, do not immediately expose it to direct sunlight to avoid sunburn. Instead, place it in a well-lit area and gradually expose it to sunlight after it has fully adapted to the new environment.

5. Preventing yellow leaves

If the cactus leaves turn yellow after repotting, it may be due to soil waterlogging. Stop watering immediately. It could also be caused by improper fertilization or incorrect temperature. Therefore, attention should be paid to the correct repotting method.

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