What Soil To Use For Outdoor Weed Plants? A Surprising Answer

What Soil To Use For Outdoor Weed Plants A Surprising Answer

First, what soil to use for outdoor weed plants?

Depending where you choose to plant your marijuana will determine the best soil for growing cannabis outdoors.

For instance, if you use containers, you’ll need to choose potting soil. Cultivating out of the ground will require topsoils and an understanding of your local earth composition.

Please continue reading so I can go into more detail about what soil to use for outdoor weed plants.

Soil For Growing Weed Outdoors

You’ve probably heard the saying “you are what you eat” before.’ The same applies to your cannabis seeds and plants, which is why quality soil is essential. Your final harvest will be better and you will enjoy it more if the earth is healthy.

Which type of soil is ideal for growing weeds outside? Where you grow your cannabis will determine the answer.

In Pots: Best Soil For Growing Weed 

When planting your seeds in pots, you have complete control over what goes into the mix. Alternatively, you could use some homemade compost instead of purchasing commercially prepared soil.

For first-time cannabis gardeners, investing in quality potting soil is the best idea. If the “super soil” is used properly, marijuana can be grown outdoors without the need for additional minerals or nutrients. It will grow with just watering.

You can make this earth yourself with a combination of worm castings, bat guano, and other components. It will be ready to use after sitting in good soil for a few weeks. To improve drainage, we advise adding a few stones.

In The Ground: Best Soil For Planting Weed Seeds 

The best soil for weed outdoors when planting in the ground is loam, which we mentioned is a mix of sand, silt, and clay.

Test your soil with the glass jar method to check the ratio of each element and amend accordingly. You should also take into account the following:

  • pH level
  • Water retention
  • Texture
  • Nutrient makeup
  • Drainage

A clay-heavy soil will drain slowly and won’t hold oxygen well. At least a month before planting, prepare large holes and fill them with plenty of compost, worm castings, manure, and other organic matter. This method allows for plenty of nutrients, drainage, and aeration.

Sandy soil is easy to manipulate and drains nicely, but it doesn’t hold nutrients well. To bind everything together, you’ll need to dig holes and fill them with compost and peat moss.

Silty soil is ideal because it’s simple to work, holds moisture, drains well, and has lots of nutrients. This soil is also incredibly fertile and will happily accept your seeds.

Ideally, your outdoor soil mix for cannabis should be a blend of them all. To keep your plants healthy until harvest, you can add in nutrient-enriched earth that you can buy at the store. If you don’t use a commercial brand, be sure to sterilize the dirt and add fertilizer.

Reasons For Choose The Best Soil For Outdoor Weeds

Soil, earth, dirt, or whatever you call it may not be pleasant to look at or handle but is the foundation of all plant life and overall health. Weed prefers specific types and textures of dirt.

The best soil for growing cannabis outdoors should boast an optimum balance between drainage and retention. As your plants are exposed to the elements, proper drainage lowers the risk of waterlogging, root rot, and pests.

On the other hand, a cannabis soil mix for outdoor growing must be able to absorb enough water to maintain your plants’ hydration throughout long, sunny days. Retention of nutrients is essential for healthy marijuana.

A quality soil for growing weeds outdoors will provide your ganja plant with all the nutrients it needs through most of its lifecycle. As a result, you won’t have to interfere as much, making the journey much safer for your plant and simpler for you.

You can buy neutral soil or flush your medium before planting to eliminate possible threats and nutrient imbalances. If you opt for this, always remember to fertigate your soil to avoid deficiencies.

The pH level of your earth plays a significant role in the health of your pot. The best soil for cannabis outdoors will have a pH of around 6.

Many things can tip the acidic vs. alkaline levels, like heavy rainfall, improper drainage, and high amounts of fertilizer. We now know a high-quality outdoor soil mix for cannabis will prevent these threats keeping your soil in the ideal parameters for an impressive harvest.

What Soil To Use For Outdoor Weed Plants A Surprising Answer
What Soil To Use For Outdoor Weed Plants? A Surprising Answer

The Best Nutrients For Outdoor Soil Growing

For your seeds to grow to their full potential, your earth will need three essential nutrients. The following fertilizers ought to be present in the ideal soil for cannabis outdoor cultivation.


This nutrient is the most essential for your plant’s growth, food processing, and chlorophyll creation. Cannabis that begins to turn yellow and stops growing taller is a sign that there is not enough nitrogen in the soil.


Leaves will turn light green to yellow when your soil is deficient in potassium. The nutrient aids proper growth and helps with the reproduction of your plant. Potassium also affects the shape, size, color, and taste of your weed.


Playing a vital role for seedlings and young plants, phosphorus helps cell division, promotes root growth, and aids the development of the growing tip.

Also read: How To Protect Outdoor Wood Furniture?

Starting To Grow Weed Outdoors Using Soil

Growing weed outdoors has a variety of advantages, such as:

  • Lower costs
  • Big yields
  • Environmentally friendly
  • Fun and relaxing

Choosing the best soil to grow cannabis outdoors means you’ll need to stay on top of monitoring the acidity, texture, and pathogens (pests in the ground).

If you opt to make your own soil or purchase sterile earth, you’ll have complete control over the acidity, nutrition, and texture.

You need to be aware that planting weed in the ground gives your plants exposure to all the living organisms in the dirt, which is more challenging to create in a pot.

The container you grow your marijuana in is fundamental to the life cycle and harvest of your plant.

Wherever you decide to plant your weed, a well-prepared outdoor cannabis soil mix is crucial to mitigate any issues throughout the different growth stages. As long as you nourish the earth properly, your plant will thrive, and you won’t need to intervene.

In the end, good soil is the key to a healthy plant, which results in the best harvest possible for you to enjoy.

Also read: How To Keep Outdoor Cats Warm?

Soil Texture And Composition

The best soil for growing cannabis outdoors is light, loamy, and drains well but retains enough moisture. Loamy means a mixture of sand, silt, and clay with a ratio of around 40:40:20. It is composed of the following:

Cannabis plants need a specific type of soil to grow and flourish. You can’t just use any substrate you come across. Even ordinary garden soil purchased from nearby retailers won’t do.

Ideally, the chosen mix should feature an optimal blend of light and heavy materials. Getting enough water and oxygen is made easier by this. On top of that, it should contain a host of organic matter, making it hospitable to the microbial populations.

Four essential components of soil can be outlined.

  • 45% minerals (sand, silt, and clay)
  • 25% water
  • 25% air
  • 5% organic matter


Water comprises about 25% to 30% of soil. But it’s not just plain water. Instead, it is referred to as “soil solution,” which is simply water with dissolved gases, salts, minerals, and organic matter. More importantly, it contains ions, which are nutrients in a form that the roots can take in.


A quarter to a third of soil is gaseous, just like water. These gasses saturate the soil’s pore spaces. Note that soil naturally contains high amounts of carbon dioxide – but low levels of oxygen. Increased root zone aeration is crucial because of this. Do not forget that plants use a process called respiration to turn sugars into usable energy.

Organic Matter

Soil is made up of about 5% organic matter or carbon-based compounds. This phrase refers to any living thing in various stages of decay, including plant and animal waste. Even though the organic content is not very high, it still has a significant impact on the yields’ quality and quantity.

The millions of microorganisms in the soil – such as bacteria, fungi, protozoa, arthropods, and nematodes – are responsible for breaking down the once-living biomass. In other words, these microbes eat organic matter as a food source. Nutrient production and synthesis occur along the way, increasing the roots’ accessibility to them. Humus, a dark, spongy substance bursting with nutrients, is the product of the decomposition process.

The main benefit of organic matter is that it enhances soil tilth – the soil’s physical condition, especially its ability to support plant growth. It specifically improves drainage, aeration, and water absorption and retention, among other things. Additionally, it functions as a nutrient storage area.


Sand drains quickly, is light, and has coarse grains. It primarily contains tiny fragments of rocks and hard minerals, such as granite, quartz, and limestone. High porosity improves the mix’s drainage and aeration. On the other hand, sand has little to no nutrient content and poor moisture retention.


Silt feels powdery when dry but slippery and mud-like when wet. The majority of it is made up of loose sedimentary material and rock fragments that are much smaller than a sand grain. It retains water extremely well despite not draining well. More than that, silt is abundant in nutrients and other crucial minerals.


Of the three types, clay has the smallest particles. There is hardly any space between the grains because they are all so closely packed. The end result is a dense substance that can effectively store nutrients and water. It is also highly fertile and contains a range of essential minerals. However, being compact also makes it difficult for moisture and air to pass through it. For instance, if the soil mixture contains too much clay, it may not drain properly and even become concrete-like when saturated.

FAQs About What Soil To Use For Outdoor Weed Plants

Why Is Super Soil Advantageous?

Super soil is a term coined by a well-known cannabis-producing company Subcool. It describes a pre-made outdoor cannabis soil mix that’s highly amended with nutrients to eliminate the need to feed your plants liquid nutes as they develop.

It’s a favored option for beginners and veteran cultivators alike as it simplifies the growing process.

In What Ways Are Potting Soil And Topsoil Different?

Potting soil contains organic materials like peat moss and composted sawdust. It’s a valuable soil mix for cannabis outdoors in containers. In comparison, topsoil consists of a combination of clay, sand, and compost. It’s ideal for planting straight into the ground.

What Essential Nutrients Do Marijuana Plants Require Most?

Marijuana needs three essential nutrients known as macronutrients to survive and thrive—nitrogen (N), potassium (K), and phosphorus (P). Without them, your weed will present an array of other deficiencies. It’ll experience poor health and produce yields that aren’t particularly impressive.

Final Words

The post’s main topic was the best soil to use for outdoor weed plants.

The soil is the canvas, paint, and even a little bit of the brush if growing cannabis is an artistic endeavor. The ratio of nutrients in your soil, which serves as your plants’ “grow medium,” determines how quickly and profusely they flower and how many buds they produce.

Cannabis plants literally grow like weeds. However, growing weed effectively necessitates care, attention to detail, and some trial-and-error in order for it to express its best qualities and develop trichome-rich flowers. Growing your own cannabis is, however, the best way to establish a more intimate, meaningful, and rewarding relationship with it.

So, having read the post, do you now understand what type of soil to use for outdoor weed plants? If you have any questions about the soil to use for outdoor weed plants, kindly leave a comment. I’ll answer as soon as I can.

I want to thank you for reading, but that’s not the end of it.