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5 Best Soil for Growing Cannabis

There’s no alternative. You need the best soil for your cannabis plants. The correct soil can make or break your buds, so we’ve got you covered with the five best soil for growing Cannabis!


Cannabis requires a lot of nutrients and can be difficult to grow without high-quality soil. This guide will walk you through different types of dirt that are good for Cannabis and choose the best soil for Cannabis!


The Top 5 Best Soil Mix for Growing Cannabis


  1. FoxFarm Happy Frog Potting Soil – Best Organic Soil
  2. FoxFarm Ocean Forest Organic Potting Soil – Best Potting Soil
  3. Nature’s Living Soil Organic Super Soil – Top Nutrient Cannabis Soil
  4. Roots Organics Rod Original Potting Soil – Best Ready-to-Use Soil for Cannabis
  5. Hoffman Canadian Sphagnum Peat Moss – Healthy Feed for the Best Soil


Growing weed in the best soil mix is a no-brainer for most aspiring pothead-cum-home growers. But with so many different types and brands on the market, how do you know which one is best? We’ve gathered the best soil for Cannabis to help you make your decision easier!


#1 FoxFarm Happy Frog Potting Soil: Best Organic Soil

Boost your soil and blast away lacklustre plants! Give your garden the nutrients it needs with Happy Frog® Potting Soil.


This best soil for Cannabis is fortified with beneficial microbes and worm castings that work in harmony with plant roots, leading them to tap into life saving natural reserves of food and energy. The result: lush greenery that’s bursting at the seams with vigour and vitality!


Why It’s the #1 Soil Mix Choice

This marijuana soil has everything a plant could want to achieve healthy growth! As you can tell from the amended mix of beneficial microbial life and mycorrhizal fungi, it does what so many other soils with poor ingredients won’t do.


It also contains bat guano, aged forest products, ground dolomite lime, and composted poultry litter — it’s one dirt road with atmosphere!


If you need something that’s 100% organic and usable straight out of the bag, then FoxFarm’s Happy Frog Potting Mix is the one for you. It’s a tad more expensive than other options. But you’re paying more for exponentially more outstanding results compared to other brands!


#2 FoxFarm Ocean Forest Organic Potting Soil: Best Potting Mix

Ocean Forest Organic Potting Soil is the ultimate potting soil with everything needed in one bag! Made with a blend of earthworm castings, bat guano, sea-going fish, and crab meal forest humus and moss, Ocean Forest ensures your plants thrive.


It promotes strong branching and healthy growth, especially for containerized plantings. Ocean Forest has an adjusted pH of 6.3-6.8 —ideal for getting nutrients into your cannabis plants and promoting root development!


For all the good stuff, you’re getting a deal worth the price and performance! Choose from 3 available sizes: 5 quarts (enough for 1-2 containers), 10 quarts (for planting multiple pots) 15 quarts (suitable for large outdoor beds).


#3 Nature’s Living Soil Organic Super Soil: Top Nutrient Cannabis Soil

You won’t need to worry about your roots. Nature’s Living Soil Organic Super Soil contains a light mix of organic nutrients and 100% organic soil microbes that will cover all the root systems’ needs during the plant cycles. Made with a base of blood meal, bone meal, earthworm castings, kelp meal, and more!


Part of this super soil’s appeal is its versatility. You can use it as part of a “super soil” mix, a top feed, and even compost tea. You can even make your potting mix with the help of some coco coir, perlite, and earthworm castings.


It’s time for you to put down your root stimulators, liquids, additives. With this natural product, you’ll save time and money! Set up your future in the cannabis industry right now.


#4 Roots Organics Rod Original Potting Soil: Best Ready-to-Use Soil for Cannabis

Roots Organic Rod Soil is the ultimate dirt for your center stage gardens! Made with the highest quality coco fibre, this soil has been repeatedly washed to produce an EC reading of under 1/10th.


You are packed with organic ingredients, including bat guano, organic earthworm castings, fishbone meal, feather meal, green sand, mycorrhizal, and glacial rock dust. This nutrient-rich foundation includes soybean meal and humic acid to ensure that any plant you put it in will be ready-to-grow.


It’s the ultimate, ready-to-use option as it comes with its own heavy-duty, camouflage-printed bag. Poke holes in the bottom and start planting!


#5 Hoffman Canadian Sphagnum Peat Moss: Healthy Feed for the Best Cannabis

Peat moss is the green gold of gardening. And Hoffman Canadian Sphagnum Peat Moss is an easy and affordable solution for all your peat needs. A premium horticultural-grade feed, it’s energy-efficient thanks to its excellent organic soil conditioning properties.


Get ready for a bountiful harvest in your raised beds or cannabis gardens—you’ll love what this product does for your growing buds.


Best Ways to Use

This 99.8% organic material has more versatility than you might think. It can mix with other amendments like perlite and vermiculite to create a custom soilless mix or be worked into the soil as needed – there’s no wrong way to blend this bunch!


When mixed with soil for Cannabis, Canadian Sphagnum peat increases the soil’s capacity to hold water and nutrients for better plant growth. Clay soils like yours can be especially troublesome because they’re dense and compacted; add some Canadian Sphagnum Peat Moss to your garden mix to loosen up that clay while encouraging better drainage!


What are the pros of growing Cannabis in soil?

There are many reasons why you should grow Cannabis in soil. These reasons include:


1) When grown in suitable soil, cannabis seedlings can get all the nutrients it needs from the earth without excessive amounts of fertilizers.


2) Soil-grown Cannabis usually tastes better than other types of Cannabis because it is fresher and was grown in a natural environment.


3) Growing weed in soil and then using the plant material to make cannabutter (cannabis butter) or cannaoil (cannabis oil) results in an even higher concentration of THC and cannabinoids than if you were to use other parts of the plant like leaves or flowers.


4) Soil naturally enhances root development. Marijuana plants grown in cannabis soil produce more root mass and more flowers, which means they have higher yields of Cannabis.


What are the cons of growing Cannabis in soil?

There are also cons to growing weed in soil. These include:


1) The risk of bugs and pests is much higher when growing in cannabis soil than in a hydroponic system.


2) Cannabis grown in the soil needs more attention and care (e.g., water retention, soil quality) than other types of Cannabis because it requires more nurturing. You should probably water your plants twice a day to ensure they get all the nutrients they need from the soil.


3) The taste of the marijuana from a plant grown in soil can be altered by what type of manure or compost was used to fertilize the plant, what cannabis soil mixtures are used, soil composition, and pesticides applied (if any).


4) If you’re growing marijuana plants in potting soil, it’s much harder to clone than other types of Cannabis. This is because you can’t control the conditions surrounding your plants when they’re growing in the ground.


5) Another major con associated with growing your cannabis plant in soil is the difficulty. There’s a high learning curve, especially if you’re trying to make the best organic soil mix. If you do not know what kind of soil best suits your plants’ needs, it can even be much more complicated.


What are some good cannabis soils?

Cannabis growers should consider what type of Cannabis they want when choosing a medium for Cannabis and the kind of soil mix they want to use.


Growers should also keep in mind that Cannabis is a very hardy plant, so it will probably grow no matter what medium you choose for growing it!


Loam soil

Loam soils are the best soil for cannabis growing. Loam soil is a combination of clay, sand, and compost or organic matter that gives your plants all the nutrients they need to thrive while still draining water well.


Making your own soil

When making loamy soil, you mix equal parts topsoil and sand into your clay or silt dirt. You can also buy pre-made loam soil mixes to plant your Cannabis in.

We recommend that you also try making your own soil. By mixing soil types for Cannabis yourself, you’re getting the most organic matter for your plants.



Clay soil refers to a type of dirt with tiny particles and drains water exceptionally quickly when it rains because the particles are so small. This soil texture makes it difficult for plants to grow because it does not allow air or water through easily, thus quickly suffocating your plants.


How to grow Cannabis with clay soil

To grow cannabis plants in clay soils, mix some topsoil with the dirt you have so that there is more topsoil than clay. This soil mixture will make it easier for your plants to grow since the topsoil is more nutrient-rich and better suited for Cannabis.



Sandy soils are similar to clay but have larger particles, so they drain water slower when it rains or otherwise water them. They do not retain nutrients very well and do not allow much oxygen to reach the roots.

Growing Cannabis in inorganic soil like sand or grit is a good way for growers with limited resources like sunlight and water (or even soil) who want to grow marijuana indoors. Sandy soil encourages good drainage as it doesn’t hold onto as much moisture, making it easier for growers to take care of their plants.


How to grow Cannabis with sandy soil

To grow cannabis plants in sand, you must mix some topsoil with the dirt so that there is more topsoil than sand. This will make it easier for your plants to grow since the topsoil is more nutrient-rich and better suited for growing weed.


What makes the best soil for Cannabis?

Cannabis plants need soils that:


  • Have a lighter texture and are more aerated than other types of dirt, such as clay or sand; this way, air can flow through easily and reach all parts of the roots. This is important because cannabis roots need oxygen to grow and thrive.
  • Are high in nitrogen, phosphorus, potassium (NPK)
  • Contain a lot of organic matter such as compost or worm castings. This will provide nutrients for your plants that are naturally occurring from the beneficial microorganisms living inside them.


How to Make the Perfect Cannabis Soil Mix?

First, you need to know the soil pH range for your plants. Tomatoes typically prefer a pH of 6-7, blueberries prefer a pH of 4.5-5.5, but Cannabis prefers a pH of 6-7.


Next, make sure you have enough drainage in the soil by adding perlite or vermiculite to the mix. Ensure at least one inch of organic matter in your potting mix for better water retention and improved drainage. Also, add calcium carbonate to counteract acidity from high levels of nitrogen in the cannabis soil.


Lastly, add slow-release fertilizer that has been diluted to half strength when purchasing it from a local garden shop instead of chemical fertilizer, which will kill any living organisms in the soil. We highly recommend adding in coco coir for even more impressive results.


How to Buy Pre-Made Soil Mix for Cannabis

There are many cannabis soil brands out there. Each type has its pros and cons, but they all work to provide your plants with the nutrients they need to flourish.


Super Soil Mix

One popular option is known as “Super Soil” or “Cannabis Super Soil.” This is a soil-less potting mix specially formulated to provide your plants with the nutrients they need. It’s an excellent option for those who want all of their indoor plants’ needs wrapped into one soil, but it can be expensive!


Organic Soil Mixes

Another popular type of soil for Cannabis is organic composted soils such as Fox Farm Ocean Forest, Fox Farm Happy Frog, and Roots Organics. These soils are a good option for those who want organic soil that is easy to mix with existing potting soil or other amendments such as perlite or vermiculite.


These types of soils will have all the nutrients and beneficial microorganisms your plants need to be mixed into them already! Make sure you do not have to add any additional nutrients unless necessary.


What about soil vs hydro (growing hydroponically)?

Hydroponics usually involves cultivating weed in an inert or pure soil-less medium. At the same time, cannabis soil growing methods often rely on organic material (such as peat moss, vermiculite, perlite) to provide nutrients and structure.


Advantages of hydroponics

One advantage of hydroponic cultivation is the ease of modifying the fertilization regime without having to change media. This is an essential point since Cannabis is notoriously sensitive to chemical salts left behind by mineral accumulation.


Another significant benefit is that there are no issues with nitrification (where potassium levels can get too high). You don’t need to leave any roots exposed on top of the medium like you would in a soilless setup where oxygenation becomes an issue with root rot.


Disadvantages of hydroponics

One disadvantage of hydroponics is that it requires a more significant initial investment because you have to invest in the hydroponic system itself. It can be difficult to dial down the nutrients your plants get, so they need to be monitored closely, which can be difficult if you are away working for long periods.


Another disadvantage of hydroponics is that most cannabis growers still prefer to grow with potting soil. It allows them more control over how their plants are fed without risking wasting tons of money.


How to add nutrients, water, and oxygen into the soil when planting seeds

To add nutrients, water, and oxygen into the soil when planting your seed, make sure to moisten the soil first with the water. It is important not to overwater or underwater your soil when growing weed because too much or too little water will negatively affect your plant’s growth.


Next, place your cannabis seed an inch below the surface of the dirt securely with some dirt on top of it. After that, cover up the seed with more dirt and then start making small holes in that layer of dirt using a paperclip or something else sharp for air holes.

Finally, water the marijuana soil until it is moist and then place some wet newspaper over the top of that while you wait for germination. It will take about a week or two before your seed has sprouted out into a seedling, ready to grow more Cannabis!


What is the best way to water cannabis?

The best way to water your cannabis plants is by making sure they get enough but not too much water. This means you should always check the potting soil every day.

Only give them as much water as needed so that it does not drain out of their container or flood the dirt, which can drown or wash away your cannabis plant’s roots. Do note that potted plants typically require less water.


What are the best nutrients for cannabis growth?

Like most plants, Cannabis enjoys a healthy dose of nitrogen, phosphorus, and potassium. The amount depends on what stage of growth you are in (vegetative or flowering).


It’s recommended that you use a liquid nutrient solution instead of dry nutrients because they will be easier to apply evenly to all of your plants’ leaves and branches. This ensures your cannabis plant will get the nutrients it needs to grow.


What about pH?

The best range for most plants is between a pH of six and a pH of eight. Most nutrients will be most available to your plant in these optimal ranges, so you must check the cannabis soil’s pH before adding any liquid or dry nutrients.


If they are too low (acidic), you should add some lime powder for cannabis plants, but if they are too high (alkaline), you should add some more potting soil to your container with a mixture of organic compost.


Use these amendments to make good soil

Fertilizers and amendments add essential nutrients to the cannabis soil to help support root growth, flowering, and overall plant health. Add these to existing soil to give your Cannabis even more life!


Worm castings

Worm castings are a type of soil amendment that can give your plants nutrients and provide a lot of aeration for the dirt. Worms eat earth, so they produce worm castings with lots of organic matter with lots of nutrients. You can buy pre-made worm casts, or you can compost your worms at home.


Coco coir

Coco coir is made from coconut husks. Coco coir has many benefits for cannabis growth, including that it is sterile and pH neutral, which means there are no harmful bacteria or microorganisms mixed in with your soil — just pure nutrients to help nourish your plants! Coir also contains beneficial microbes that help create a healthy environment for your plants, and it’s also water-absorbent.


Coco coir is relatively new to the cannabis industry. Despite its status, it’s quickly become one of the most popular mediums. Coir helps fight off plant diseases that affect soil-grown plants like mildew or root rot, which can kill your marijuana in the long run.



When mixed with soil mix, perlite can be a great way to help your Cannabis grow healthy and strong. Perlite is made of silica-rich volcanic rock that helps improve the drainage ability in soils while also increasing its water retention capabilities. It’s also very lightweight, making it easy for cannabis growers to move when needed.


Other Tips For Growing Cannabis in Soil

Even if you have the best soil for Cannabis, it is essential to remember that other factors affect healthy plant growth. Getting good cannabis soil is just one battle. When it comes to growing weed, you’ll want to take a more holistic approach.


Grow it in a tent

It’s best to grow Cannabis in a tent or box where your plants will have lots of room so they won’t be crowded. It also helps to make sure that there are easy ways to set up all necessary equipment (e.g., lighting, watering) without having to move or bend any of it.

This way, you can avoid breaking anything expensive like grow lamps that cost hundreds of dollars each, making growing weed much more difficult!


Understand your plants’ lighting needs

The main thing that affects how much and what kind of lighting you should get when growing Cannabis indoors is the stage in your plants’ growth cycle.


For flowering, it is best to get a light with both red and blue lights as they mimic the sun’s natural rays better. For vegging, you should use mostly either blue or yellow lighting.


Learn how to control pests ASAP

It is best to stay on top of any marijuana plant pest infestation as early as possible because it can be hard for you to get rid of them once they become numerous enough.

The most common cannabis plant pests are spider mites, whiteflies, gnats, and aphids. It is best to use natural remedies for pest control like ladybugs, predatory wasps, and nematodes.


Most chemicals are harmful to your young cannabis plants (and for you). But if you do need to use something chemical, make sure it’s safe for consumption.

As you can see, there are many different ways for you to start learning how to grow weed. Before starting, make sure that it is legal in your area and check if growing cannabis plants will be allowed in your rental agreement or lease.


Common Mistakes When Growing Weed in Pots

Many growers still fail to produce quality buds when growing weed in pots despite having great soil mixes or the most expensive potting soil. We’ll cover the common mistakes bud heads make so you can avoid them.


Limiting space for growth

The number one mistake is not buying the right sized pot or container. Cannabis needs to fit in the pot or container because it needs to spread its roots and soak up nutrients.


Not getting the best soil for Cannabis

The second mistake people make when planting Cannabis is not getting nutrient-rich soil for Cannabis. The best soil contains all essential nutrients and is preferably organic. Soil quality drastically affects how well your weed will turn out.


Planting too deeply

The third most common mistake people make is planting it too deeply. You should only plant the Cannabis 2 inches below the surface of the cannabis soil. Otherwise, it won’t get enough light. Overall, it’s crucial to plant Cannabis correctly for it to grow healthy.


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5 Best Soil for Growing Cannabis – Conclusion

The human race has been cultivating Cannabis for thousands of years. And while we’ve come a long way from our days as hunter-gatherers, the basics of growing it in organic soil remain essentially unchanged.


If you have decided to grow Cannabis in soil, your next decision is which type of soil. Many different cannabis soils will work for growing cannabis plants, but some are better than others.


This blog post has provided information on the best type of soil for growing Cannabis and how to make the best soil mix. You can also buy pre-made mixes from the best cannabis soil brands if you want an easy way out.

We hope that this guide has been helpful to you, and we would love for you to share it with your friends. If you have any other questions, please get in touch with us!