How watering plants with milk helps them grow

How watering plants with milk helps them grow

Do you have leftover or expired milk? You don’t have to waste it by pouring it into the sink, instead, you can use it in your garden!

Milk is not only beneficial for humans, it is also beneficial for plants

Milk contains many nutritional benefits, the most important of which is a large amount of calcium. Surprisingly, these benefits apply not only to human consumption but also to the consumption of plants.

Milk can act as a fertilizer and stimulant in your garden beds and support your plants to grow healthy and strong.

Best of all, if you have milk that’s likely to go in the trash, you can give it a new purpose!

Benefits of watering plants with milk

Milk contains calcium and several B vitamins that plants can absorb and use. Calcium is a great nutrient for plants to absorb because it is a support system for the consumption of other vitamins and minerals. This is beneficial because it promotes growth and prevents blossom end rot, which can be caused by calcium deficiency.

Milk also has antifungal properties and is considered a natural pesticide for many varieties of plants.


It’s important to be frugal when it comes to using milk, because overwatering your plants with milk can cause the plant to wilt or become stunted. It is always recommended to use whole milk instead of skim, as skim milk can lead to black mold or downy mildew depending on the plants you are watering with.

Finally, because it is milk, it can have a slightly unpleasant smell when placed in the garden!

How to water your plants with milk

Technically any animal milk (cow, sheep, goat, etc.) can be used in the garden. This includes fresh, expired, evaporated, and even powdered milk.

Of course, alternative milks like almond and oat don’t have the same nutritional benefits, so cucumber and basil won’t be as beneficial!

Low-fat or low-fat animal milk options are recommended, as they are less likely to have negative results.

Spray the plants with milk


All of these milks must be diluted properly to avoid wilting or rotting on your plants. The best way to do this is to mix milk with water in a 1:1 ratio. Using a spray bottle will help direct the milk mixture directly to the soil and roots.

Alternatively, spray the mixture directly on the leaves, as they can absorb calcium. Spray a small amount on each leaf and wait 30 minutes until the liquid is absorbed.

If there is any leftover milk mixture, simply wipe it off with a damp cloth. Leaving extra liquid on the leaves can cause mold to form, so be vigilant when spraying!

After applying the milk mixture, be sure to avoid using pesticides in your garden. Pesticides will rid the milk mixture of any good bacteria in it, rendering the entire application pointless.

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