Does Baking Soda Kill Moss? – Quick Read

Published by: | Updated: March 24, 2023
Does Baking Soda Kill Moss

Baking soda is known to go hand in hand with various baked goods, but we all know there is more to it than meets the eye! It has become a primary tool for cleaning, deodorizing, beautifying, bite relief, and much more.

But regardless of its many purposes, will baking soda kill moss?

In this article, we’ll discuss if baking soda kills moss and how to use it safely.

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About The Author

Meet the expert behind this article. 



Co-owner & Service Director

Hey there, I’m Cody. 

A decade of residential and commercial pressure washing led me to start JCS Refresh. Now I can share my knowledge with folks like you. 

Reading from Kitsap, Washington?

Our team specializes in various moss removal services is standing by with free quote. 

Quick Answer

One of the many advantages of baking soda is killing moss, and preparing it is easy! 

In a bucket filled with warm water, mix 3 tbsp of baking soda and then transfer to a spray bottle. After that, you can spritz away!

For thorough instructions, proceed to the next section.

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How to safely spread baking soda around

Baking soda plays a vital role in tipping off soil’s pH, and since moss thrives on mildly acidic, wet, and moist surfaces, sodium bicarbonate helps kill these troublesome plants.  

With that, check out below how to safely prepare and spread baking soda on surfaces:

Things you need: baking soda, warm water, bucket, spray bottle, rake/brush/pressure washer

1. Prepare the mixture

Pour 1 Liter of warm water into the bucket and dilute 3 tablespoons of baking soda. Then, stir thoroughly, ensuring all the powder is entirely dissolved. From there, transfer the solution to a spray bottle.

JCS Refresh Does Baking Soda Kill Moss

2. Patch test

It is essential to always do a patch test first before using your solution on the rest of your surface so you can determine the correct concentration of your mixture, letting you adjust or prepare more based on what you need.

3. Spray the solution

After finalizing the concentration of the mixture, generously spray the solution on the moss. Don’t forget to shake the bottle between applications to ensure a proper mix. 

Note that when doing this procedure, there is no chance of rain within the next 24 hours after application.

If you’re applying the solution on a surface with no plants nearby, it’s best to do it on a sunny day. However, if surrounding plants are close to the moss, do it during dusk to avoid burning the leaves.

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4. Let it sit for 2-3 days

Let the solution seep entirely into the moss. Then, reapply the mixture the next day and wait until the final day to see if the moss has turned brown.

5. Scrape the moss

Once the moss has turned brown, scrape it using the rake, brush it or rinse it using a pressure washer, depending on the surface.

Will baking soda kill grass? 

While baking soda can help terminate moss, it can also kill the grass. 

Sodium is an active ingredient in baking soda that can burn roots, leaves, and other plants; it’s crucial to use it cautiously, especially in surrounding grassy areas.

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Does baking soda kill weeds?

Baking soda is considered one of the best natural weed killers, especially when mixed with vinegar. Mix 1 ½ cups of baking soda in a gallon of water, 1 or 2 tbsp of white vinegar, transfer to a spray bottle and apply.


Baking soda solutions can help you eradicate moss in just a few days. 

However, since it has an active ingredient that can dry out plants, leaves, and grass, make sure you use it correctly and in moderation.

Thank you for reading our article!