Can leftover milk be used to water plants? Can milk be used to water flowers?

Can Leftover Milk Be Used to Water Plants?

An article about whether leftover milk can be used to water plants, and here comes the introduction from the editor.

Can Leftover Milk Be Used to Water Plants?

Leftover milk can be used to water plants, as it contains a lot of nutrients, including the nitrogen, phosphorus, potassium, and other elements needed by plants. After decomposition by bacteria, it can become a good fertilizer, suitable for watering acid-loving flowers. However, it should not be used directly and needs to be diluted with water to avoid increasing the soil's acidity and affecting plant growth.

Using Leftover Milk to Water Plants

Leftover milk can be used to water plants, but it needs to be fermented and diluted before use. If used without sufficient fermentation, the heat generated during fermentation in the soil can burn the plant roots, severely affecting plant growth.

Benefits of Using Leftover Milk to Water Plants

Leftover milk contains a lot of nutrients that can be absorbed by plants after bacterial decomposition. Milk can also suppress the appearance of aphids, thrips, and spider mites, and prevent and resolve plant decay after flowering, promoting photosynthesis.

What Flowers Are Suitable for Watering with Leftover Milk

Fermented and diluted leftover milk can be used to water acid-loving flowers, but it is not suitable for alkaline-soil-loving flowers, such as cacti.

What Plants Are Suitable for Watering with Leftover Milk

Milk contains many nutritional elements, including the nitrogen, phosphorus, potassium needed by plants. After bacterial decomposition, it can become a good fertilizer and also provide magnesium required for plant photosynthesis. The inorganic salts can be directly absorbed by plants, making it feasible to use leftover milk on any plant.

Method for Using Leftover Milk to Water Plants

Place the leftover milk in a bottle, seal it properly, and occasionally open the cap to release gas to prevent the bottle from breaking. After 2-3 months of full fermentation, dilute the milk with water and then use it to water plants.

Do Not Water Plants Directly with Leftover Milk

Leftover milk should not be used directly to water plants. Unfermented milk, when poured into the soil, will release lactic acid, causing an imbalance in soil pH, increasing soil acidity, and affecting plant growth. In severe cases, it can lead to the death of the plant.

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