Does water softner salts kill weeds from the garden

Does water softener salt kill weeds from the garden?

Weed, not the cannabis one, is a pernicious culprit to the gardeners all over. These unwelcome guests can grow anywhere without you even realizing it.

Whether you are farming or gardening, you already know the possible side-effects of weeds growing on the land. The plants will suffer and won’t grow as fast as you intend.

That’s why farmers weeding on the land is such a common scenario in most pastoral regions. Most gardeners also follow the same principle to take out weeds from the garden. But, it takes much effort.

There is another way of wiping out the weeds. That is applying water softener salts on the ground. In this post, we’ll discuss everything you need to know about how water softener salts help you keep your garden weed-free.

We, at Aquaseep, come with fresh, new content on various household products like water filters, water softeners, heaters, coolers, and so on. Check out our blog page here.

Now, let’s find out more about weeding with softener salts.

Why does weed affect plant growth?

Weeds in your garden will slow down plant growth by subtly competing for the water and minerals from the ground. As those grow copiously, the plants can’t keep up.

We already know that plants can produce their food. And, to do that, plants require CO2, H2O, and sunlight. The source of CO2 is air, and there’s plenty in it. Sunlight is also abundant. 

But, the groundwater is scarce. The plants use their roots to extract water trapped in between soil particles. This groundwater also holds minerals vital to carry out photosynthesis.

On this note, weeds are also plants, only unwanted ones. And, as such, those also rely on the same components as plants do. So, both plants and weeds have to fight for the same thing, to live.

But, the only difference is the plant gets surrounded by weeds on all sides. As a result, only a handful of plants can grow sufficiently. Others suffer due to a lack of macro and micronutrients.

In this fashion, the weeds spread fast and subtly affect the plants you want to grow. That’s why getting rid of the weeds is so vital.

Can water softener salt kill weeds permanently?

Water softener salts contain plenty of Sodium Chloride, which increases the salinity of groundwater. The increased saltiness works as a desiccant, and the weeds can’t extract enough water to survive. Continued exposure to brine solutions like that for a few days causes dehydration, and the weeds will eventually die.

There are more than one ways to wipe out weeds from your farm or garden. But, they keep on coming back. The most common way is to use a lawnmower to get rid of the seed heads.

As the number of seed heads goes down, the weeds can’t reproduce as fast. Then, you can manually weed using a spade or other weeding tools. But, the process is lengthy and requires hard work.

On top of that, this won’t permanently solve the weed issue. That’s when the salts come in. As you spray salts, especially softener salts, on the soil, it will cause dehydration to the weeds.

Eventually, if you continue to follow the same procedure for a week or two, the weeds will die due to a lack of water. You can do this using water softener salts.

As more than 85% of US regions have hard water, the water softener has become a household tool. Just take a couple of softener salt pellets, add those to the water, and mix it up nicely.

Now, spray the solution on the weeds, and that will be the permanent solution to your weed problem.

How can water softener salt get rid of the weed?

Spraying saltwater solution disrupts the osmosis process. As a result, the plants and weeds can’t take in water, a vital component for living. By spraying saltwater solution at a stretch for a week or two, you can wipe out even the strongest and long-lasting weeds from the garden.

As mentioned previously, water is a vital component for all plants to perform photosynthesis. In most cases, the plants can only take in water buried in between soil particles.

The trees and plants rely on their roots for this purpose. Here, osmosis governs the water intake process. The root cells have an outer structure that only lets water molecules enter inside.

For osmosis to occur through the membrane, there need to be two types of water solutions. One will have a higher concentration than the other. To balance up, water from the low-concentration solution will travel towards the high-concentration one.

And, in the process, the concentration of the two solutions comes to an equilibrium. In the case of plants, the high-density solution stays inside the cells, and the low-density one is the groundwater with minerals.

As you spray softener salts on the garden, it will mix with groundwater. As a result, the groundwater solution will have a higher density. And, due to that, the roots won’t be able to pick up a sufficient amount of water.

Keep on spraying the saltwater solutions for a few days at a stretch. And, eventually, those will die from dehydration.

And, this is how softener salts can help you by working as a herbicide.

What are the drawbacks of using softener salts in killing weeds?

One thing you need to keep in mind is that using saltwater solutions can attack both the plants and the weeds. As a result, the plants will also die from desiccation.

A continued spraying of saltwater solution on the soil will make it barren. As a result, all types of plants will fail to grow on the soil. Therefore, you need to be careful while using salts as herbicide.

If you want to use a piece of the garden to set up a patio or as a path to walk, then you can spray salt solution without much thinking.

Otherwise, you should only spray the brine solution on the weed. If you’re squirting it very close to a plant, make sure to water it as soon as you finish.

You can use a jet spray to pinpoint only the weeds on your farm or garden. It will save your time and plants as well.


Throughout this post, we tried to show how you can clean your garden using softener salts. As we’ll have water softeners in our house, we already are familiar with softener salts.

Not only for weeding, you can also use softener salts to wipe out ice from your lawn, driveways, sidewalks, and what not. You can find out more about that on our recent post. Check out the post here.

So, have you find your solution in our post? Don’t forget to share it with your friends. Also, if you want to check out more informative posts like this, you can check out our blog page here. Cheers!!!

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