How to prevent and treat yellowing disease in clivia?

Clivia yellowing disease is also called chlorosis. Clivia yellowing disease is caused by acute water shortage and iron deficiency. Affected leaves show milky white patches, or turn entirely yellow-white, and in severe cases become wilted, shrunken and withered. Clivia yellowing disease has several manifestations: when all the leaves turn yellow, it is often a symptom of sunscald. When leaves begin to yellow from the tip, it is often caused by potting soil that has not fully decomposed, or by excessive fertilizer and water, resulting in root burn. When individual leaves turn yellow, it is very likely the result of heat scorching, cold wind exposure or acid-base damage. Sometimes the whole clivia plant's leaves turn yellow, mostly because of a nutrient deficiency. There is another kind of leaf yellowing caused by insufficient light.

Prevention and treatment methods

In summer, place the clivia in a shade shed, in a cool and ventilated spot, and expose it to light with 50% shading to prevent sunscald. Clivia must be grown in decomposed, loose, slightly acidic leaf mold. When the temperature exceeds 30°C, apply little or no fertilizer, and reduce the amount of watering accordingly, to prevent root rot followed by leaf yellowing. If the leaves turn yellow because of a lack of nitrogen fertilizer, the grower can appropriately apply more cake fertilizer. At the same time, a 0.1-0.2% ferrous sulfate aqueous solution can also be sprayed on the leaves every day. In winter, strengthen the light, and it is best to give the clivia a sunbath at a fixed time every day. With such observation and management, clivia rarely develops yellowing disease.