Causes of and Solutions for Yellowing Leaves on Potted Flowers

The main causes of yellowing leaves on plants and flowers are as follows:

1. Water-induced yellowing: Too much water or waterlogging in the potting soil can cause root disease and rot. The symptoms are new tender leaves turning dark and lusterless, and new shoots withering.

Solution: Reduce watering and loosen the soil promptly so the water evaporates as quickly as possible.

2. Drought-induced yellowing: The opposite of water-induced yellowing, this refers to the phenomenon of yellowing leaves caused by a lack of water due to improper watering over a long period. For example, frequently giving only "half watering", or the pot soil being too full to water thoroughly. It appears as new leaves with normal color, but old leaves slowly drying, turning yellow and dropping starting from the base.

Solution: Remove the excess potting soil and water thoroughly, or use the soaking method to let the potting soil absorb water fully.

3. Fertilizer-induced yellowing: Over-fertilizing causes new leaves to become thick and not spread out, while old leaves turn yellow and drop.

Solution: Stop fertilizing and water frequently, or scatter some leafy vegetable seeds in the pot, let them sprout and grow to a certain height, then pull them out, so as to consume the excess fertilizer.

4. Nutrient-deficiency yellowing: The phenomenon of yellowing leaves caused by not repotting or changing the soil for a long time, insufficient fertilizing, or the pot being too small.

Solution: Apply fertilizer and water promptly according to the plant's growth needs, repot and change the soil once every one to two years, and apply enough base fertilizer when repotting.