Why Do Spider Plants Like Milk? (Explained)

by Alex Kountry
Updated on

A lot of people have had spider plants in and around their houses at one time or the other. Spider plants are tough hardy plants which brighten up the environs.

Yes, spider plants do like milk and as odd as it might sound, milk is quite good for plants. Milk has a number of nutrients to add to plants including vitamins and calcium.

This article will discuss whether milk is good for spider plants, what milk does to plants, whether houseplants like milk to mention a few.

Is Milk Good For Spider Plants?

Why Do Spider Plants Like Milk

As odd as it may sound, milk is a great supplement to add to plants as it provides them with a lot of nutrients and acts as a fertilizer.

When watering plants with milk, it’s not about delivering moisture. Instead, it’s about giving them more nutrients, keeping bugs away, and encouraging growth.

Milk is a farming strategy that the ancients used for fertilizing plants especially when they are not very healthy and lacked nutrients.

Milk, which is high in helpful microorganisms, bacteria, and fungi, encourages the growth of beneficial microorganisms.

It also allows healthy microbes, and fungi to proliferate in the garden soil.

Calcium, vitamin B, natural sugars, and essential proteins found in milk help plants grow and stay healthy.

Milk could be used as a natural insecticide as well as a fertilizer.

Milk is an excellent way to clean plant leaves and can help battle leaf viruses, aphids, and fungal infections.

Here is an article I wrote on are spider plants succulents

What Does Milk Do To Plants?

Milk is good for plants because it provides them with calcium and other nutrients.

Calcium constructs the cell walls that allow plants to stand upright and transport nutrients.

The same nutrients that make milk beneficial for humans, such as calcium and B vitamins, are also beneficial to plants. 

Calcium promotes plant growth and prevents blossom end rot, which can be brought on by calcium deficiency.

This disease affects plants such as tomato, pepper, and squash plants frequently.

Milk can also be used as a pesticide, with aphid control and mosaic leaf virus reduction showing the most promise.

It can also be used to prevent powdery mildew as an antifungal agent.

Almost every indoor plant can benefit from calcium supplementation. 

Please note that not all milk is advantageous for plants.

Some varieties of flavored milk and sweetened condensed milk are heavy in sugar and also undergo extensive processing.

While skim milk can promote the growth of black rot and soft rot, the fat in full-fat, undiluted milk can cause damage to the plant’s foliage. 

Can I Water My Plants With Milk?

Yes, you can water your plants with milk, however, you do have to get the proper technique to do so.

As long as it is adequately diluted, any sort of milk, including fresh, expired, evaporated, and powdered can be used to water houseplants.

A 2% reduced-fat or 1% low-fat milk is preferable to skim or full milk.

Pour the milk and water mixture into a spray bottle after combining them in a 50/50 ratio.

It is crucial to dilute the milk so that it actually benefits your plants rather than damaging them.

The ratio does not need to be exact, as you can simply combine the very last drops of the gallon as you empty it.

Spray the milk mixture to the plant leaves and check back in 30 minutes to ensure that the watery milk has been absorbed.

If there is any moisture remaining on the leaves, wipe them with a damp cloth.

Certain plants, such as tomatoes, are susceptible to fungal illnesses if liquid remains on their leaves for an extended period of time. 

Additionally, you can pour the milk mixture directly into the soil at the plant’s base, allowing the roots to absorb it.

If you wish to spray a milk solution over a large garden area as opposed to a pot, use a garden hose sprayer.

1 quart of milk will cover a 20-by-20-foot garden, whereas 5 gallons should cover 1 acre.

Do not use a chemical pesticide or fertilizer on the plants after spreading the milk, as this will destroy the bacteria in the milk that promotes plant growth.

After applying milk to the plants, there may be a little unintended effect.

Also check out this article I wrote on should I trim my spider plants

Do Houseplants Like Milk?

Houseplants like milk as it is quite beneficial to them when used in the right doses.

Milk includes calcium, vitamin B, natural sugars, and advantageous proteins that promote plant development and health. Milk can be utilized as a natural insecticide or fertilizer. 

Milk is an effective method for combating leaf viruses, aphids, and fungal infections and for cleaning plant leaves.

The various benefits of putting milk directly into the plant’s foliage or soil include supplying additional nutrients for plant growth and warding off pests and fungal diseases.

Don’t be surprised when you see your houseplants growing more rapidly and looking fresher after you apply milk to them.

Milk promotes soil health and discourages harmful soil pathogens around the potting soil. When done in moderation, milk is a great way to boost your plants’ health.

Do Plants Grow Better With Water Or Milk?

Water is a source of nutrients dissolved from the soil.

Without it, plants would not be able to absorb the necessary nutrients from the soil, which is crucial for its life and growth. 

In addition to light, plants require water to complete the natural process of photosynthesis. In addition, it aids in the hydration of the plant’s leaves and protects them from drying out.

Milk on the other hand has proteins and lipids which make it difficult for plants to absorb the water content.

However, when diluted with water, it may aid in combating several plant-harming diseases, including fungus

In water, a plant will grow larger and thrive better. Milk may be advantageous for plant development in tiny doses.

Nonetheless, milk should never be substituted for water. Water is necessary for plant development.

Can Plants Grow In Different Liquids?

Water is the most beneficial liquid for thirsty plants, but there are a few other liquids that plants can utilize.

Unfortunately, there are a few liquids that plants cannot accept, so if you wish to experiment with different liquids, you will need to be cautious and pay close attention to your plant’s health.

Liquids like milk and coffee can be added to plants in moderation as they have nutrients that can be beneficial to the plant.

However, water is the only liquid that can help plants grow successfully right down to the smallest molecules.

As much as water is good for plants, you should also be conscious of the kind of water you add to your plants.

Tap water is not very healthy for them as it contains mineral substances. Also water should be fed to plants in moderation as too much can lead to root rot. 


Milk in its numerous forms is great for houseplants and you can water houseplants with milk.

Watering houseplants with milk must be done in moderation as too much of it can affect the plant adversely.

Always use water as the main liquid but you can add other liquids like coffee and milk in moderation as they have properties that can boost the growth of the plant. 

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About the author

Alex Kountry

Alex Kountry is the founder of HayFarmGuy and has been a backyard farmer for over 10 years. Since then he has decided to write helpful articles that will help you become a better backyard farmer and know what to do. He also loves to play tennis and read books


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