Reason: The cactus is a succulent plant. It is particularly drought-resistant. If it is watered too much, the soil will accumulate water, which will easily lead to root rot. This is manifested by the wrinkle shrinkage at the bottom of the cactus. In severe cases, it will also cause the cactus to rot.
Solution: If you feel the pot soil is wet, dig out the cactus, check the root system, remove the rotten part in time if there is any, apply some carbendazim on the wound and dry it, and then plant it again in the moist soil.Planting pots should not be too large, with breathable earthen pots.
Reason: The cactus is warm and afraid of cold. In winter, it is better to ensure that the maintenance temperature is above 10 , and less than 10 to reduce watering.If the temperature is below 0 C, the cactus is prone to frostbite, which is manifested in the yellow spot of the sphere and the shrinkage of the bottom of the plant.
The solution: avoid applying nitrogen fertilizer at the end of autumn, and apply more phosphorus and potassium fertilizers to improve the freezing resistance of the cactus; Put the cactus in the heating room in winter, but keep away from the heating and geothermal; Find a plastic bag to cover the cactus in winter and open the bag for ventilation during the day.
Reason: Although the cactus is a pulpy plant and likes the sun, it still needs to be properly shielded from the hot sun in summer. Long-term exposure to the sun will cause rapid loss of soil moisture, causing the bottom of the cactus to fold and shrink. Sudden exposure to the sun will also easily sunburn the ball of the plant.
Solution: The main protection is the insolation in summer, you can set up a shading net above the plant to block part of the light; Or move the cactus to the east balcony and only bask in the relatively soft light in the morning.
