The reasons for the yellowing of new leaves in potted plants, solutions to the yellowing of new leaves in potted plants.

Many flower enthusiasts may have encountered this: the new leaves of their roses, hydrangeas, etc., are yellow, and some are even white. Why is that? How can we make the leaves turn green again?

1. Reasons for Yellowing New Leaves in Potted Plants

Potted plants are most prone to yellowing new leaves, as the majority of plants prefer acidic or slightly acidic soil. The soil mix in potted plants is relatively simple, and with repeated watering, the soil easily becomes alkaline. For acid-loving or slightly acid-loving flowers, alkaline soil can lead to poor root absorption and cause deficiency symptoms, which are directly manifested as yellowing and chlorosis of new buds and leaves. In severe cases, it may be accompanied by leaf tip necrosis and eventual withering.

Especially acid-loving flowers like gardenias and azaleas often develop yellowing new buds after a period of potted care, which is actually caused by soil alkalization leading to iron deficiency. Many flower enthusiasts struggle with gardenias and azaleas due to this issue. Roses and hydrangeas also have high iron requirements and frequently show iron deficiency symptoms such as yellowing and chlorosis of new leaves.

2. Solutions for Yellowing New Leaves in Potted Plants

The main reason for iron deficiency yellowing in potted plants is often due to the soil mix. If the potting mix is simple, lacks rich nutrients, or has poor nutrient retention, it can lead to iron deficiency in potted plants.

Therefore, when potting flowers, we must first address the issue of soil mix. The soil mix should be diverse, using a variety of substrates for blending. For flower enthusiasts with few potted plants, it is recommended to buy pre-mixed nutrient-rich soil directly, which can save a lot of trouble. After all, the amount used is not much, and buying all types of substrates can be cumbersome.

The second main reason for iron deficiency in potted plants is soil alkalization, which is mainly caused by nutrient loss and water quality, especially in northern regions where the soil and water are more alkaline. Each watering neutralizes the soil's acidity, which is why northern flower enthusiasts find it difficult to grow gardenias and azaleas.

To slow down soil alkalization, it is advisable to use slightly acidic water when watering. Therefore, many flower enthusiasts add a little vinegar to the water to neutralize the alkalinity.

Watering with vinegar can indeed maintain soil acidity, and under conditions of sufficient soil nutrients, acid-loving or slightly acid-loving flowers like roses, azaleas, and hydrangeas can grow well. However, if the soil itself lacks nutrients, even watering with vinegar can still cause iron deficiency yellowing in potted plants, because the soil itself lacks iron fertilizers.

Therefore, for acid-loving flowers, it is recommended to use ferrous sulfate regularly. Ferrous sulfate is not a medicine or hormone; it can maintain soil acidity and supplement iron, preventing iron deficiency yellowing in potted plants and also correcting iron deficiency yellowing to make the leaves turn green again.

The above information covers the causes of yellowing new leaves in potted plants and the solutions for yellowing new leaves in potted plants. I hope it helps you, and I also hope everyone comes to see more green plant and flower experience and common sense!