Why Do Clivia Roots Rot and Leaves Turn Yellow? Causes and Solutions

There are many causes of root rot in Clivia, mainly:

(1) The soil contains pathogens that infect the root system.

(2) High temperatures and excessive water. To raise the soil temperature of the Clivia pot, some people place the pot directly next to a radiator or hot stove, causing the plant to be scalded by excessive heat; on the other hand, if the air is dry, watering is too frequent, and ventilation is poor, the fleshy aerial roots will quickly suffocate and die.

(3) Excessive fertilizer. When the fertilizer amount is too large or the liquid fertilizer is too concentrated, it disrupts the balance of water and various nutrient elements between the root system and the soil, causing the roots to lose too much water and die.

(4) Using ceramic or plastic pots to grow Clivia results in poor permeability, leading to root rot.

If Clivia root rot is caused by carelessness, the rescue method is: knock the plant out of the pot, remove the old soil, cut off the rotten roots, rinse the roots with a potassium permanganate aqueous solution, then place in sunlight for about 10 minutes. If only a few roots are rotten, it can be directly planted in sterilized nutrient soil, and with attention to controlling moisture, it can recover to normal in about two months; if more than half of the fleshy roots have rotted, it can be planted in fine sand to encourage root growth; if all the fleshy roots have rotted, cut off all the rotten roots, wash the root crown, plant in fine sand, and after two to three months, new roots will grow.

There are many reasons for Clivia leaves turning yellow, mainly the following:

(1) As the plant ages, the oldest leaves at the very base turn yellow and drop off; this is normal metabolism and no cause for worry.

(2) Root rot caused by various reasons will make all leaves turn yellow; this is the most common situation.

(3) Strong summer sunlight can scorch the leaves, causing sunburn, and in severe cases can make the leaves become scorched.

(4) External stimuli such as hot water, fire, cold wind, and acid or alkali damage can also cause leaves to turn yellow.

(5) If the yellowing starts from the pseudobulb, it is mostly caused by pests.

(6) Nitrogen deficiency can also cause leaves to turn yellow, known as "chlorosis." When nitrogen fertilizer is insufficient, chlorophyll decreases, and all leaves will turn pale green or pale yellow.

When Clivia leaves are found turning yellow, analyze the specific situation, identify the cause, and treat accordingly.