What Potting Soil Doesn’t Have Gnats? (Explained)

Tired of dealing with pesky gnats in your potting soil? In this comprehensive blog post, we discuss the types of potting soil that are less likely to harbor gnats, helping you maintain a gnat-free garden.

Learn about the factors that contribute to gnat infestations and the potting soil ingredients that can help you avoid this common nuisance.

Moreover, delve into related topics such as refreshing old potting soil and keeping bugs out of potting soil. Keep your garden free of gnats by understanding the ideal potting soil choices. Dive in and discover gnat-resistant potting soil options today!

Fungus gnats in potting soil can be caused by overwatering or organic material that hasn’t fully broken down.
Gnats themselves are not harmful to plants, but their larvae can damage roots.
Sticky traps, neem oil, and allowing the soil to dry out between waterings are effective ways to get rid of gnats in potting soil.
Potting soil can be reused, but it should be refreshed with new organic material and nutrients.
A high-quality commercial potting mix with peat moss, perlite, and vermiculite is a good choice for indoor plants.

Black Gold Natural & Organic Potting Soil

Black Gold Natural & Organic Potting Soil is made from a mixture of all natural compost and other organic matter. It does not contain synthetic fertilizers, pesticides, herbicides or animal byproducts. 

Black Gold also contains beneficial microbes that help to break down plant waste into nutrients for your plants. In addition to these benefits it is also free of peat moss, chemical additives and dyes.

Miracle-Gro Potting Mix

You can buy it in a bag (for $2.97 at Home Depot), or in a pretty cool bucket with handle ($6.29). It’s also available on Amazon for about the same price as a bag of Miracle-Gro Potting Mix, but you’ll pay for shipping, which makes it more expensive than buying at the hardware store.

“To ensure there are no bugs in your potting soil, it’s essential to take proper precautions. Check out our comprehensive guide on how to make sure there are no bugs in your potting soil to learn more.” – How Do I Make Sure There Are No Bugs in Potting Soil?

Espoma AP8 Organic Potting Mix

If you’re looking for a potting soil with no peat moss, no perlite and no vermiculite—we can help.

Espoma sells an organic potting mix that contains no peat moss, no perlite and no vermiculite (all ingredients known to cause problems). 

The mix also includes nutrients like nitrogen and phosphorus that are specific to plants in containers. Finally, it doesn’t have any dolomite lime or gypsum: two components of potting soil that can cause issues with gnats when they get into your home’s water supply.

Fox Farm Ocean Forest Organic Potting Soil

Fox Farm Ocean Forest Organic Potting Soil is a 100% organic potting soil that contains no pesticides, herbicides or chemicals. The natural pH of 6.0 to 7.0 ensures good drainage and aeration for your plants.

The bagged product is available in two sizes: one cubic foot (1/8th bushel) and one gallon size bag. 

Both are intended for use as regular potting mix, but the larger bag is specifically designed for indoor plantings of vegetables and herbs that could be planted directly into the soil without risk of root disease or transplant shock because it contains no added fertilizer ingredients like peat moss can have.

“Wood chips can be an excellent addition to garden soil, as they help improve soil structure, retain moisture, and provide a source of nutrients. Read our brief explanation of why wood chips are good for garden soil to learn more.” – Are Wood Chips Good for Garden Soil?

Roots Organics Original

Roots Organics Original potting soil is made of composted forest humus, which is a rich, organic medium that’s great for plants. 

In addition to being 100% organic and natural, Roots Organics also doesn’t contain any chemicals or pesticides so there are zero chances of gnats! 

So if you’re looking for an alternative to chemical-laden soil, look no further than Roots Organics Original potting soil.

Happy Frog Potting Soil

Happy Frog Potting Soil is a high-quality potting soil that is made from 100% organic materials and contains beneficial microbes and mycorrhizae to help plants thrive. 

This particular blend of peat moss, perlite, composted forest humus and earthworm castings helps plants grow healthy roots. 

The porous structure of Happy Frog Potting Soil allows for excellent drainage, which prevents root rot in the long run.

“It’s essential to know how to recognize the signs of bad potting soil, such as a foul odor or mold growth, to ensure your plants stay healthy. Check out our article on how to know if potting soil is bad, answered, for more information.” – How Do You Know If Potting Soil is Bad? Answered

Burpee Natural Organic Potting Mix

This Organic Potting Mix is available in a 2.5 gallon size, a 1.5-gallon size, 10 pound size and 40 pound size. It is also available in 50 pound bags or 60 pound bags. 

The organic potting soil provides nutrients to your plants while adding water retention properties that help plants maintain their moisture levels as well as prevent over watering issues and root rot due to excess moisture.

Pro-Mix BX All Purpose Growing Media with Mycorise AF.

In addition to the soil, you will also need to buy mycorrhizal root inoculant. Mycorrhizal root inoculants are beneficial fungi that live in the soil and help plants absorb nutrients, like nitrogen and phosphorous. 

Mycorrhizate AF is a mycorrhizal root inoculant (like all of the other ones on this list) that can be applied to your potting soil before planting your houseplants to improve nutrient absorption and plant health.

Kellogg Garden Organics Raised Bed & Potting Mix

The Kellogg Garden Organics Raised Bed & Potting Mix has no peat moss, perlite, vermiculite or gypsum. It also does not contain rocks or manure. The only thing you’ll find in this potting soil that can cause a gnat infestation is compost.

To make sure your plants are free of gnats when you use it as a potting medium, you should mix it with a bit of sand before putting it into the container. This will help keep moisture levels stable and prevent the growth of fungus that could attract gnats to your containers.

“Garden soil and potting soil may seem interchangeable, but there are some key differences between the two. Check out our article on are garden soil and potting soil the same to learn more about the distinction.” – Are Garden Soil and Potting Soil the Same?

New Horizon All Purpose Potting Mix

New Horizon All Purpose Potting Mix is a popular choice among gardeners and landscapers for its blend of sphagnum peat moss, perlite and vermiculite. 

It has a neutral pH, contains slow-release nutrients and is free of harmful chemicals. For use in either indoor or outdoor growing environments, this organic potting soil smells fresh out of the bag with notes of wet forest floor.

The ingredients in this mix create an acidic environment that attracts insects such as gnats—and since there are no harmful chemicals present (like pesticides or synthetic fertilizers), it’s safe to use around food crops as well as ornamental plants at home or in your garden.

Espoma Bio-Tone All Purpose Organic Fertilizer 

The Espoma Bio-Tone All Purpose Organic Fertilizer . This is not just any ordinary potting soil, it’s an all-purpose organic fertilizer that promotes root growth and overall plant health. Non-burning, this product contains a blend of 23 nutrients that help to encourage robust root systems and strong stem structure in plants.


If you’re looking to grow your own vegetables and are worried about the pests that can come with it, this list should help you find the potting soil that works best for your needs. 

Some of these options may not be available in stores near where you live, but we hope they give you a starting point when shopping around!

“Potting soil doesn’t have to break the bank to be effective. Our article on what is a good cheap potting soil best alternatives provides helpful suggestions for affordable and effective potting soil options.” – What Is a Good Cheap Potting Soil? Best Alternatives

Further Reading

Here are some additional resources related to potting soil and gardening that may be of interest:

How to Get Rid of Fungus Gnats in Potting Soil: This article provides helpful tips and tricks for getting rid of fungus gnats in potting soil.


What causes gnats in potting soil?

Gnats in potting soil are often caused by overwatering or the presence of organic material, such as compost or mulch, that has not fully broken down.

Are gnats harmful to plants?

While gnats themselves are not harmful to plants, their larvae can damage the roots of young plants and seedlings, causing stunted growth or death.

How do I get rid of gnats in my potting soil?

There are several methods for getting rid of gnats in potting soil, including using sticky traps, applying neem oil, and allowing the soil to dry out between waterings.

Can I reuse potting soil?

Potting soil can be reused, but it should be refreshed with new organic material and nutrients before planting new crops.

What is the best type of potting soil for indoor plants?

The best type of potting soil for indoor plants will depend on the specific needs of the plant, but a high-quality commercial potting mix that includes peat moss, perlite, and vermiculite is generally a good choice.