What Does Humic Acid Do For Grass?

By Brian Mounts | Jul 03, 2020
What Does Humic Acid Do For Grass

A Complete Guide & Timeline for Applying Humic Acid to Your Lawn

Nothing is more satisfying than seeing a beautiful lawn outside your house…every morning. It contributes to the aesthetics of the home. Although most people think that tending to your lawn can be a hassle, truth is it’s effortless if you know the basics and some hacks. And that’s what we bring you every week.

So, you’ve been tending to your lawn for a very long time, but it still looks sick, empty, and unkempt. Sometimes why your lawn remains like that isn’t because you’re not dressing it, over-seeding it, aerating, or whatever you can think is the usual way of taking care of a lawn. Sometimes it’s just the soil structure.

You can’t tell a good soil by just holding a handful and feeling the texture; there are a lot of factors to check, some physical, biological, or chemical.

So, this is beginning to look like some science post, but Nah… I’ll keep it very simple.

The health of your grass is almost wholly dependent on the condition of your soil. Until it’s fixed, you’ll continue to spend a lot of time out there without improvement.

Whether you have clay or sandy soil, there’s an effortless way to fix your soil condition, and the best part: it’s environmentally friendly.

Humus is a black substance that increases the nutrient holding capacity of any soil. It helps plant roots to retain water and nutrients.

In the simplest term, humus is formed by microbial activities on dead plants and animals. This causes them to decay, and the decomposed organic matter becomes organic fertilizers for the soil.

Humic substances, also known as humus, is made up of humic acid, fulvic acid, and humin. I’ll spare you the science right now because this post is all about what humic acid does for your lawn and how you can apply it. So, you may need to push back your seat for the read.

What does humic acid do for your lawn?

As I mentioned, several factors affect soil conditions, including soil structure, pH level, organism, and even climate. But let’s talk about a very common one, pH level.

The PH of the soil is simply the acidity or salinity of the soil. It can be altered by too much rainwater, which causes leaching and nutrient loss, so your grass will have very little access to nutrients, and still can retain the little it receives. Humic acid will also It also will help to lower the pH of the soil and will flush high levels of salts out of the root zone

Humic acid is a dark brown savior, a highly soluble in substance that contains amino acids and other chelating agents, which is an excellent source of soil Nitrogen. So, when applied to the soil, humic unlocks nutrient and trace elements on your soil and helps your soil absorb the best of any fertilizer you add to your soil.

Top 10 benefits of adding humic acid to your lawn

The benefit of adding humic acids to your lawn, can’t be overstated. Still, I’ll be listing out the 10 most useful benefits.

  1. Improves your soil condition, so it retains more nutrient and water
  2. Humic acid stimulates root growth and promotes plant cell division
  3. It increases healthy carbon production to correct plant growth
  4. It helps to aerate the soil and improve bioactivity
  5. Humic acid also helps to physical and mechanical properties of the soil in structure, color, and consistency
  6. Improves germination rates of seed during over-seeding
  7. It’s also perfect in stabilizing soil PH level
  8. It increases photosynthesis and chlorophyll concentrations
  9. It helps in scavenge toxic pollutants or instead, to detoxifies the soil
  10. It improves the growth of beneficial micro-organisms

How to use humic acid for your lawn

There is no specific volume amount of humic your soil will need. Any amount should be okay if you mix it with water. Butdepending on the concentration of the product you’re using; an appropriate amount should be around a 2% solution mix.

Tip: Humic acid performs best when you apply directly after dry fertilizers.

So, if you have your humic already, the first step will be to scoop any amount into a big bucket for mixing.

I always prefer putting my acid before the water because it is easier that way. But either way, it’s your choice.

After scooping the acid into the water, pour a generous amount of water and mix. You can start with a gallon of water or two. Then mix thoroughly for about two minutes before putting it into a movie sprayer to spray all over your lawn.

You may ask, what about putting it on dry?

Well, you can apply it dry, but it’s more commonly mixed with water and iseven more efficient that way.

Plus, it gives you more for less price, depending on the mix ratio.

What is the best time to apply humic acid?

On a light note,I always say that unless you want to work on your skin tan, the best time to apply your humic acid to your lawn is the cool of the day. You’ll be able to pay closer attention to every part of the lawn and the details. Well, that works better for me.

But the two most important things I consider before applying humic acid are:

  • The heat of the sun.
  • Amount of water.


If you apply your humic solution in a blazing sun heat, you need not be told that the moisture will be dried up shortly, so you might want to increase the amount of water next time. But I don’t think it’s a healthy idea because you may end up diluting the acid, just too much.

To be on the safe side,try to apply your humic acid before 10 am or after 5 pm during the cool of the day.

What happens when you apply too much humic acid on your lawn?

The reason some people reduce the application rate of humic acid on their lawn is for fear of applying it too much. And they think it’ll harm their lawn.

But is there anything as too much humic acid on the soil?

Research shows that there’s nothing like an adverse effect caused by applying too much humic acid. On the contrary, the more the amount of humic acid added to the soil, the better.

So, I can categorically say that no amount of humic acid, the concentration of humic acid, or the application rate of the acid will hurt your lawn. Instead, plants grow better and look healthier on the soil with more humic acid.


So now you’re one of the few persons that know how much this less popular substance can improve your lawn in no time. No matter how bad your lawn or soil condition is, humic acid is the miracle you need, and one of the cheapest.

Start using it today to save hours of tending to your lawn. And yes, give your home that aesthetics we’ve talked about already. You deserve it.