Four causes of yellowing leaves in home gardening

The most common problem in home gardening is yellowing leaves. When a plant's leaves turn yellow, it is generally due to the following causes:

First, water yellowing, which is caused by watering too much, leading to long-term waterlogged soil, poor aeration and even partial rotting of the fibrous roots. It shows as dull yellow, lusterless young leaves and shriveled new shoots.

Second, fertilizer yellowing, which is caused by too much fertilizer. It shows as older leaves and branch tips turning yellow and dropping, while new leaves, though thick and glossy, are generally uneven and not spread out flat. If it is a valuable flower, you can scatter a layer of pak choi or radish seeds, and after the seedlings come up for a few days, pull them out to consume the nutrients.

Third, drought yellowing. Because of long-term failure to water thoroughly or dehydration, although the new leaves keep a normal color, the lower leaves gradually dry, turn yellow and drop as they age, progressing upward.

Fourth, alkaline yellowing. Some southern flowers especially prefer acidic soil, and when the water in the north is somewhat alkaline, the leaves gradually fade, turn yellow and even drop. The simplest method is to water with fermented rice-washing water or rainwater.