Best Soil For Cannabis Seeds

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It is important to begin growing cannabis with the right soil. Otherwise, your marijuana plants may not be healthy and productive. The best soil for cannabis plants depends on a variety of factors. Learn how to find or make the best soil for growing marijuana! If you have an indoor cannabis grow set-up, you need the best soil for growing weed indoors. Our guide dives into what factors to consider and the best ones.

What is the Best Soil for Cannabis, Weed, and Marijuana?

Everyone has heard about people just growing cannabis in their backyard or out in the woods. Yet as with any crop, growing cannabis in regular soil really is not ideal. If you have ever grown fruits or vegetables, you know that different types of plants need different nutritional content. Even growing something as simple as grass requires specific soil acidity levels and fertilizers.

In this article, we will cover why growing cannabis in regular soil is not ideal, what the best type of soil really is, and tips for getting the best grow.

Why Regular Soil Is Not Ideal for Growing Marijuana?

When starting a traditional garden, many gardeners have to spend months enriching their soil. But even enriching soil is not always ideal for growing marijuana. If you have been to a garden center, you may have noticed that there are different blends of soil for things like succulents, flowers, vegetables, and fruits. Different types of plants need different levels of nutrients. Soils tend to differ in five major ways: drainage, nutrients, texture, pH level, and water retention.

What is the Best Soil for Cannabis?

There are dozens upon dozens of different brands of soil. What you will need to look for is soil that has the right blend of attributes for your marijuana plants. Here is what you need to know:

  • Drainage. Some plants will rot readily if their roots are allowed to remain moist. High drainage soils are frequently used for plants such as succulents, in order to make sure that their roots dry out quickly. The addition of things like “perlite” improve drainage. Cannabis does not need high drainage. Moderate to low drainage is fine.
  • Water retention. This controls how long water will be retained in the soil. If you have soil with low water retention, you will need to water your plants more frequently. Cannabis plants like water, which means you want soil with high water retention. Soils that include peat moss are a good choice, as this keeps the soil moist.
  • Nutrients. If you are growing cannabis, it is very likely that you are going to be adding a nutrient base of fertilizer to your soil regardless. That means that in terms of nutrients, you really just want a high quality, general purpose soil. Many prefer organic soils, to ensure that the cannabis that they receive will be organic. Organic soils do not have added chemicals that could be harmful.
  • Texture. The texture of your soil can range from a coarse soil to a very silt-like soil. In reality, this does not matter so much for cannabis: you can choose a soil texture that makes the most sense in your setup. If you are growing in pots, you may want a potting soil that holds together better. If you are planting outside in raised garden beds, you may want a heavier, more clay-filled soil. pH level. This is the acidity or basicness of the soil. Cannabis tends to prefer its environment to be slightly acidic. In general, the best soil for cannabis is going to be between 6 to 6.8 pH.

These are all the attributes of the soil itself. You can alter these attributes through the use of fertilizers. For instance, frequently you may add nutrients such as nitrogen to the soil through a fertilizer. Because of this, getting the right blend for your marijuana plants is actually a bit complex. You may need to fine-tune your soil and fertilizer combination over time, and if there are any issues you see in your plants (such as wilting) they may be directly related to soil, drainage, light, or any other number of factors. Consider taking the guesswork out of having to mix fertilizers or nutrients by utilizing a fully amended living soil, such as SoHum Living Soil®.

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What is the best soil for cannabis growing?

If you’ve thought about growing, you’ve probably already thought about the best soil for cannabis.

You likely didn’t give it that much thought, though, because who takes time to think about soil?

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Well, the soil that you grow your marijuana in is very important, so if you want to grow the best weed possible, you should pay some attention to it.

This guide will cover everything you need to know about the common growing medium.

How to choose the best soil for marijuana plants:

The basics of using soil for marijuana grows

Plants typically need three things to survive: water, light, and soil.

Soil may seem obvious, but nowadays, with soil alternatives and hydroponic growing, even that is optional.

However, for most growers, especially those who are new to growing marijuana, growing in soil is the best option.

Soil growing (instead of growing in nutrient-infused water) is one of the easiest and most familiar methods of growing.

Plus, attempting to grow hydroponically the first time you are growing marijuana is almost guaranteed to be a recipe for disaster.

Soil is simply the natural way to grow, but it is still important to start with a good quality soil.

After all, it provides the plant’s nutrients and helps the plant form stable roots.

High-quality soil is especially important for outdoor plants who could face potentially harsh winds and other environmental conditions.

Why grow marijuana in soil?

Great soil can help your plants thrive, so it is essential to first understand what soil is.

It is definitely more than dirt.

Advantages of using soil

The soil is the most natural medium for growing almost all kinds of plants. It means that most people already are familiar with or have experience in doing it.

In effect, it is easier and less stressful to use than other modes of planting, which requires a learning curve.

Another advantage is its simplicity in making it work. Just watering the soil is enough for most plants to grow.

Also, the supplies needed are few compared to using other costlier mediums.

Natural soils are made up of mineral particles, air, organic matter, water and biological organisms.

Disadvantages of Using Soil

Since soil is an organic material, it is natural for bugs to live in it.

Therefore, the plants are more prone to suffer from pest infestations.

There is also the issue of slower growth.

In contrast, marijuana grown using hydroponics enjoys explosive growth due to faster and more efficient nutrient absorption.

Nearly 25% of soil is air that exists in a gaseous phase –not quite liquid or solid.

Water

Water is known as soil solution, a liquid made of water, and ions from dissolved salts, and chemicals.

These ions are unable to attach to minerals in the soil.

Water also makes up nearly 25% of soil. The mineral particles in soil consist of sand, clay, and silt.

These inorganic particles can significantly impact a soil’s quality.

These tiny fragments of rocks and hard minerals (such as quartz) do not carry any nutrients, meaning large amounts of it in your soil is a bad thing.

Soil with lots of sand is arid;

however, small to moderate amounts can improve drainage and aeration as well as increase tilling quality.

This mixture of sand and minerals has some nutrients, but not many.

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It is is beneficial for soil, as it can include the important nutrients of K, Ca, Mg and Fe- making soil fertile.

Clay is aluminum-silicate and has negatively charged ions that attract these nutrients to it.

However, if there is too much clay, it will be hard to till the soil, and there will also be poor drainage.

Soil also includes a variety of organic matter and substances such as:

  • Decomposing plant and animal particles
  • Organisms and microorganisms living in the soil
  • Substances produced by roots and microorganisms

These exist in smaller amounts, typically around 5%. Although there isn’t much organic matter in soil, its presence highly influences its quality and the eventual yield of your plants.

The particles and substances are also known as humus, whereas organisms may include earthworms and other beneficial creatures.

How to recognize the best soil for cannabis

Now that you understand what soil is, it is much easier to recognize good soil when you see it.

Marijuana soil has some specific requirements, so unless you are buying soil that is specifically designed for cannabis, you’ll want to learn to pay attention to certain things.

Good soil will have the correct texture, drainage ability and water retention for marijuana. It will look dark and rich, with a loose texture that isn’t muddy.

Good marijuana soil also drains well – you should be able to pour water on it and have it drain out within a few seconds.

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The soil should retain enough water for the plant to thrive, as the roots need that water, but it shouldn’t be so much that the roots cannot get enough oxygen either.

This is why both proper drainage and water retention are essential aspects of good soil.

Good soil also has good ingredients. Of course, soils that include some form of organic matter (humus) are great for marijuana because they provide plenty of nutrients.

Some examples of organic matter to look for in a good cannabis soil include:

  • Earthworm castings
  • Bat Guano
  • Blood, fish, or bone meal
  • Kelp
  • Mycorrhizae
  • Perlite
  • Pumice
  • Sandy Loam
  • Dolomite lime

If you purchase soil that has any of these ingredients in it, there’s a good chance it might provide great nutrition for your plants.

You’ll still want to make sure that it has the right nutrients for your plant’s particular stage in its life cycle though.

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Choosing soil for your marijuana plants

With an understanding of what you are looking for, you can now start to select the right soil for your plants.

The first thing to remember is that soil is highly dependent on the stage of life that your plant is in.

While it is still sprouting, it is best to use peat plugs or something similar to that.

These ready-made blocks of soil provide everything that a budding seed needs to make its way into the world.

If you can’t find, (or don’t want to use) peat plugs, an organic potting soil will also work.

Organic soils will not have any added ‘slow-release’ chemicals, something you’ll want to avoid when growing marijuana.

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While potting soils do not have the right type of nutrients to support a growing marijuana plant, they will have enough to support a seedling for its first couple of weeks.

After that point, you’ll want to supplement with nutrients that are specifically designed for marijuana plants – especially once you reach the flowering stage.

Another reason why it is okay to use potting soil (at least at first) is because you’re likely going to end up moving your plants after they are about a month old anyway.

The roots will be too big for their first home, and you should place them in a bigger container or move them outdoors.

That is the perfect time to switch out your soil for something more suitable.

If you used peat plugs, you can simply add the plugs to local dirt or grass mulch to make a suitable soil outdoors.

Not only does this provide a better texture over the natural earth, but it also offers ample room for young roots to move around and increases the nutrient value in the soil.

You can also move your seedlings into either sterilized potting compost or a “living soil.”

If you opt for sterilized soil, it should include some form of amendment (such as perlite), that makes up at least 20% of the soil.

This additive will help increase the amount of air present in the soil, which helps marijuana plants grow faster.

Living soils, on the other hand, are composted soils.

They are useful because they include microorganisms that create an ecosystem similar to the best natural scenario.

The roots directly absorb the nutrients produced from these organisms, and the results are often noticeable in the flavor and scent of the harvest.

Best Soil For Growing Weed Indoors

If you have an indoor cannabis grow set-up, you need the best soil for growing weed indoors. Our cannabis soil guide dives deep into the factors to consider when shopping for soil for pot plants including its drainage, water retention, and texture.

In addition, we list our favorite potting soil products for cannabis, so you can grow big and bountiful yields time after time.

Choosing the Best Soil for Indoor Cannabis Gardens

When shopping for the best potting soil for cannabis, there are few factors to consider. First, how many plants are you intending to grow? This will help determine the amount of soil you will need.

Above all, you want soil with plenty of nutrients, proper drainage, and good water retention. Here are some factors to consider when buying the best potting soil for weed.

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Texture

The best soil for growing weed indoors includes an optimum mixture of silt, sand, and clay soil, known as loamy soil. Ideally, the mix should have about 40% silt, 20% sand, and 40% clay.

Make sure your plants get a loose and light soil texture to help with root growth and ensure oxygen gets to your roots.

Drainage

Cannabis potting soil requires proper soil drainage. When watered, the soil should not hold the water too much to where it pools on the top. If you have bad drainage, your plants can be vulnerable to root rot and mold.

Water Retention

While you want soil with proper drainage, you also don’t want the water to completely flush through without allowing the roots to take in water and nutrients.

Water retention refers to your soils ability to hold water. The best soil for growing pot indoors has balanced drainage and water retention properties.

PH refers to how alkaline or acidic solution is. Cannabis thrives in a soil pH range between 5.5 and 6.5. Deviating slightly from this range won’t cause too much damage but if it goes well beyond the range, you can get stunted growth, lower yields, and dead plants.

Nutrients

Nutrients are your cannabis plants life force. Most ready-to-use and organic soil mix for weed is packed with nutrients for your cannabis.

Keep in mind, the nutrients in your soil mix don’t last forever. At most, they can last a few weeks and require you to keep a close eye on any nutritional deficiencies or signs of overfeeding.

Best Soil for Growing Weed Indoors

1. FoxFarm Happy Frog Potting Soil

FoxFarm’s Happy Frog Potting Soil is ready-to-use for indoor and outdoor applications. Happy Frog potting soil features soil microbes such as mycorrhizae and humic acid to improve root growth and nutrient uptake.

Other goodies include bat guano, aged forest products, and earthworm castings. Keep in mind, this soil is designed for container planting.

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2. FoxFarm Ocean Forest Potting Soil

FoxFarm’s Ocean Forest Potting Soil features a robust blend of ingredients from the “earth and sea.” Its powerful ingredients include fish emulsion, aged forest products, earthworm castings, crab meal, and sphagnum peat moss.

Its sandy loam, aged forest products, and sphagnum peat moss give this soil a properly aerated texture that is sure to improve nutrient uptake. This soil is also designed for container use.

3. Super Soil Organic Concentrate

From Nature’s Living Soil, the Super Soil Original Organic Concentrate comes in a 1, 5, or 10 lb. bag. All you need to do is add your preferred organic potting media to complete your mix. It contains all organic ingredients that your plant will need to thrive.

Full of helpful microorganisms and fungi, this concentrate can produce the best-looking and tasting buds around. Ingredients include organic earthworm castings, bat guano, blood meal, bone meal, azomite, epsom salt, coconut water powder, kelp meal, alfalfa meal, and so much more.

4. FoxFarm Coco Loco Potting Mix

FoxFarm’s Bush Doctor Coco Loco is a coconut coir potting mix meant to recreate the tropical jungle floor. Light and airy, it does this by incorporating layers of exotic coconut palm humus which can hold more than its weight in water while still retaining great drainage characteristics.

Its ability to hold onto water will mean you wont need to water your garden as often. Water every few days for best results.

5. Big Rootz All-Purpose Potting Soil

Big Rootz’s All-Purpose Potting Soil features a professional-grade composition at a budget-friendly price. This cheap soil for growing weed is meant for indoors or outdoor gardens and has been Certified Green Clean (CGC).

A team of weed growers developed this high-quality formula that combines rapid-release amendments with medium and slow release for an optimal performance.

6. Roots Organics Rod Original Potting Soil

Roots Organics Original Potting Soil is ready-to-use for your indoor garden. Its formula is perfectly designed for aeration and water retention so you can feed your plants frequently for fast growth.

Plus, the soil bags can be used as pots. Simply cut off the top, add in your plant, and you’re set. Ingredients include coco fiber, perlite, peat moss, pumice, composted forest material, bat guano, worm castings, fish bone meal, and much more.

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