Which plants need to be supplemented with ferrous sulfate (which flowers are suitable and how to use it)

Ferrous sulfate is an inorganic salt with no odor. It is often used to water flowers to help them grow well. However, it is suitable for some flowers and not for others. So what flowers are suitable for watering with ferrous sulfate? How to water them more effectively? Let's talk about it below.

What flowers are suitable for watering with ferrous sulfate?

Not all plants need ferrous sulfate. Ferrous sulfate is mainly used for southern foliage plants when they are planted in the north to change the soil pH and increase the iron content in the soil.

For example, ferrous sulfate can be used for cycads, azaleas, camellias, daphne, spider plants, poinsettias, jasmines, gardenias and other foliage plants .

Atyr sulfate is also used by plants that lack iron. The specific symptoms of iron deficiency are: yellowing of new leaves and yellowing of veins in old leaves. Plants that meet the above conditions can be determined to have iron deficiency.

However, ferrous sulfate will make the soil slightly acidic, so it can only be used to water flowers that grow well in acidic soil.

Camellia (picture)

How to use ferrous sulfate to water flowers effectively

1. Irrigation

Before using ferrous sulfate, you should first understand the plants you are raising. If it is a plant that likes acidic soil, such as azalea and Milan, you can use ferrous sulfate. It can not only supplement iron for plants, but also improve the acidity and alkalinity of the soil.

If the plant likes to grow in alkaline soil, ferrous sulfate should not be used to avoid adverse effects.

Ferrous sulfate is a powdery, tiny granular substance that contains iron. It can replenish some damage to plants caused by iron deficiency and can also change the pH of the soil.

Generally speaking, the purity of ferrous sulfate sold on the market is about 95% regardless of the size of the package. The general dilution concentration for irrigation is about 1:1000, that is, 1 gram of ferrous sulfate to 1000 ml of water.

【 Use as solution 】

The most common way to apply ferrous sulfate is to mix it into an aqueous solution and then water the flowers. The plants will absorb nutrients directly from the soil and improve the pH of the soil.

【 Pay attention to the frequency of use 】

Ferrous sulfate can be used to water flowers, but do not use it too frequently. Long-term use will cause the soil to become too acidic and the soil may become compacted.

There are generally two situations for the use of ferrous sulfate. One is to add water for irrigation. The specific method is to add 1 gram of ferrous sulfate to 1000 ml of water, dilute it and water the potting soil. Use it once every 15 days or so.

After using it twice in a row, wait for a while before continuing to use it. Except for very acid-loving plants, slightly acidic plants should not use ferrous sulfate for a long time.

2. Use for soil mixing

The second situation is to mix it directly with the soil. For those acid-loving plants, when you are newly potting or changing the pot and soil, you can use a small amount of ferrous sulfate to mix with the potting soil, stir it evenly and then use it in the pot.

One thing you need to note is that the ferrous sulfate content should not be too high. Depending on the size of the potting soil, 2 grams is used as the measuring line. A larger pot should use a slightly higher amount, while a smaller pot should use an appropriate amount less.

The role of ferrous sulfate

1. Ferrous sulfate contains sulfur and iron, which can provide the nutrients necessary for crops to grow.

2. The iron element in ferrous sulfate can enhance the flowers' ability to absorb nitrogen, phosphorus and other elements; it can also regulate the redox process of plants and promote the absorption of various elements.

3. Ferrous sulfate can prevent chlorosis, avoid yellowing and falling of leaves; it can also prevent rice blast, chlorosis and anthracnose.

4. Ferrous sulfate is acidic and can neutralize the alkalinity in the soil, lower the pH value of the soil, improve the pH of the soil, and is beneficial to the growth of crops.

5. It can promote the production of chlorophyll and enhance the photosynthesis of flowers.