Why Do the Leaves of蟹爪兰 Turn Red?
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Why Do the Leaves of蟹爪兰 Turn Red?
1. Root Rot: When the roots of蟹爪兰 rot, the leaves will turn red. It is necessary to immediately remove the plant from the pot and cut off the rotten roots. 2. Soil Alkalinity: Replace the soil with a loose, breathable, slightly acidic sandy loam. 3. Low Temperature: Move蟹爪兰 to an indoor environment above 10℃ during winter. 4. Lack of Nutrients: Apply phosphorus fertilizer once a month during the growing period of蟹爪兰.
1. -- Root Rot --
蟹爪兰 is a type of cactus. If excessive watering leads to water accumulation in the roots during maintenance, it can cause root rot. When water and nutrients cannot be transported to the aerial parts, the plant lacks nutrition, and the leaves will turn red. It is important to control the amount of watering, and if the roots have rotted, remove the rotten roots and repot.
2. -- Unsuitable Soil --
The suitable soil for蟹爪lan is loose, fertile, and well-drained with a slightly acidic pH. Long-term failure to replace the soil can lead to soil alkalinity, affecting plant growth and causing leaf discoloration. It is advisable to replace the soil promptly or add some lemon water when watering, or mix some acidic leaf mold when fertilizing.
3. -- Low Temperature --
When蟹爪lan is frostbitten, the leaves will also turn red. It is especially important to pay attention to winter conditions. The ideal growth temperature should be maintained around 10 degrees Celsius. If the outdoor temperature is too low, it can be moved indoors for care, ensuring measures for insulation and paying attention to changes in day-night temperature differences. Perform plastic film covering at night to maintain warmth.
4. -- Lack of Nutrients --
A lack of nutrients in the plant can cause leaf discoloration, especially when there is a deficiency of phosphorus. Long-term lack of fertilization can also lead to low soil fertility and nutrient loss. During the growing process, it is necessary to supplement fertilizers according to the plant's needs. You can use a compound fertilizer of nitrogen and phosphorus, or spray some potassium dihydrogen phosphate solution when watering.
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