What causes the yellowing of Alocasia macrorrhizos leaves
Alocasia macrorrhizos is a flowering plant of the Araceae family, with a fairly large cultivation area in China, and its ornamental value is relatively high. Nowadays many people choose to keep a pot of Alocasia macrorrhizos at home for viewing, so the cultivation area of Alocasia macrorrhizos is still very large. However, when growing Alocasia macrorrhizos, its leaves always tend to turn yellow. So what causes this? Let us take a look below!
1. Unsuitable environment
An unsuitable environment is the main cause of yellowing leaves in Alocasia macrorrhizos. The most important factor is the soil. When growing Alocasia macrorrhizos, if the soil pH is unsuitable and too alkaline, or if it is grown in a flowerpot without changing the soil for a long time, then nutrients in the soil become deficient, which affects the plant's growth. This leads to undesirable symptoms such as yellow leaves and drooping in Alocasia macrorrhizos. Therefore, when planting, we should pay attention to adjusting the soil pH properly. For pot cultivation, the soil should be changed every year, keeping the amount of soil replaced at about 1/3, and then old roots and diseased roots should be pruned off, with appropriate topdressing to provide nutrients.
2. Improper watering
Alocasia macrorrhizos has a relatively large demand for water. If watered too much, water will accumulate in the flowerpot, causing the roots of Alocasia macrorrhizos to rot, which affects its nutrient absorption and growth. But if watering is not thorough, then because of tightly packed roots or soil compaction and other reasons, watering becomes uneven, which affects the plant's water absorption. Therefore, we should pay attention to doing the watering work well and keep watering even. During the growing season, water more, but after entering winter, Alocasia macrorrhizos will gradually go dormant, and at this time we should pay attention to controlling the amount of watering.
3. Direct sun exposure
When growing, Alocasia macrorrhizos likes to grow in shady places. Although it has a certain demand for light, it cannot withstand exposure to strong sunlight. If it is placed directly under the sun to be scorched, then the leaves suffer from sunburn and are very prone to yellowing and dying. Therefore, in the process of growing Alocasia macrorrhizos, we should pay attention to controlling the light properly. The light should not be too strong, and the daily light duration should not be too long either; keeping it at about 3 hours is sufficient.
4. Insufficient light
Insufficient light is likewise a main cause of yellowing leaves in Alocasia macrorrhizos. When growing Alocasia macrorrhizos, if it stays in a place with insufficient light for a long time, then the lack of light affects the plant's photosynthesis and reduces the plant's nutrient accumulation. If it grows in such an environment for a long time, then the internodes of Alocasia macrorrhizos will be very long, and the leaves will be small and weak, so its ornamental value will also be affected. Therefore, we should properly provide light for Alocasia macrorrhizos to promote its growth.
The above is a brief introduction to what causes the yellowing of Alocasia macrorrhizos leaves. That is all for today's introduction. This article is for reference only, and we hope it can be of some help to everyone.