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Best Soil for Cannabis

Coast of Maine – Platinum Grower’s Mix, Super Soil

FoxFarm Happy Frog Potting Soil

Fox Farm Ocean Forest Potting Soil Mix

Cannabis, like all other plants, thrives from an ample supply of water, oxygen, and nutrients. These three base components are responsible for your crops’ overall health, growth rate, and final yield.

Of these three factors, soil composition is one of the most easily modified to suit the needs of cannabis crops. Due to this, cannabis-specific soil mixtures are a booming industry.

Although the nutrients themselves aren’t altered, they are added in specific amounts that promote healthy growth for cannabis plants. Without these pre-made soil mixes, cultivators would be left to compose their own.

The main question is: what’s the best soil for growing cannabis?

Pre-made cannabis potting mixes allow beginners and professionals alike to jump into the fast lane for growing marijuana plants. You’ll find everything your plants need in these soil mixes, such as beneficial bacteria, fungi, macronutrients, micronutrients, vitamins, and more.

Furthermore, cannabis-specific soil mixes provide a more natural form of growth, as compared to the hyper-accelerated growth of hydroponics or aeroponics.

We’ve sifted through countless soil brands to find you the best soil for growing cannabis. Whether you’re searching for an organic solution or an all-in-one soil mix – we’ve got your plants covered so they can grow on cruise control.

Coast of Maine – Platinum Grower’s Mix, Super Soil

FoxFarm Happy Frog Potting Soil

Fox Farm Ocean Forest Potting Soil Mix

Big Rootz All Purpose Potting Soil

Organic Super Soil Concentrated Strength

Super Soil Autoflower Concentrate

Purple Cow IndiCanja Organic Living Soil

Canna Terra Professional Soil Mix

Coast of Maine – Platinum Grower’s Mix, Super Soil

Coast of Maine is a boutique soil mix brand. Their Platinum Grower’s Mix is intended for growers that don’t want to spend additional money on pH monitors and associated products.

Coast of Maine’s Platinum Grower’s Mix is a stand-alone organic soil mixture that contains mycorrhizae, kelp meal, fishbone meal, lobster compost, alfalfa meal, and worm castings. This organic soil mix is jam-packed with everything your plants need to thrive.

However, all of these high-quality ingredients come in at a hefty price. If you’re willing to stomach the bill, you’ll find a hearty harvest of aromatic and cannabinoid-rich flowers come harvest time.

Although Coast of Maine’s Platinum Grower’s Mix is expensive, it performs exceptionally well. This is one of the best soil mixes for cannabis we’ve seen, and it’s highly suitable for both beginners and professionals alike.

    High-quality organic ingredients No need to pH adjust No supplements needed Grows cannabis plants from seedling to harvest
    Doesn’t contain perlite for optimal drainage One of the most expensive brands on the market May contain fungus gnats

FoxFarm Happy Frog Potting Soil

Fox Farm’s Happy Frog Potting Soil is one of the best and highly rated organic soil for cannabis plants. It’s perfect for seedlings and young plants because It contains mycorrhizal fungi and other beneficial microbes.

The nutrient source of Happy Frog stems from bat guano, earthworm castings, and forest products, such as wood chips. There are enough nutrients to last an entire cycle, from seedling to harvest.

Fox Farm didn’t overdo the nutrient content for a very specific reason, which was not to burn your plants. Many other soil brands create “hot” soil mixes by placing an overly-high nutrient content, but this is not the case with Fox Farm’s Happy Frog Potting Mix.

This is one of the best potting soil mixes for cannabis, especially for beginners. This is also the best soil for cannabis seedlings because they don’t require a high level of nutrients. If you’ve been looking for a gentle cannabis-specific nutrient mix – this is it.

    An ideal composition that doesn’t drain too fast Perfect soil for seedlings to mature cannabis plants Comes loaded with worm castings and soil microbes Insect free
    Doesn’t provide enough P & K for the flowering phase Contains a large number of wood chips Similar to standard garden soil mixes

Fox Farm Ocean Forest Potting Soil Mix

Fox Farm’s Ocean Forest Potting Soil Mix is a tried-and-true soil mix for much of the cannabis community. It’s one of the easiest soil mixes to use for all stages of plant growth, whether from seedling to harvest.

A massive benefit for Ocean Forest is the fact that it’s already set to the ideal pH range. 6.3 to 6.8 pH is the ideal range for plants growing in soil for nutrient uptake. This makes Ocean Forest incredibly efficient, and your cannabis plants will likely show it with vigorous growth.

Fox Farm’s went above and beyond by offering a two-pack, which enables cultivators with additional potting soil. However, the price comes to $30 per bag, which is still on the high-end for an organic potting mix.

Although you’ll spend a substantial amount of money for Fox Farm’s Ocean Forest, it will pay for itself, considering you won’t need a pH pen. If you’re looking for an easy-to-use potting soil mix – this is it.

    Simple to use soil mix Two-for-one deal saves money in the long run pH adjusted Ideal soil mix for seedlings to mature plants
    Expensive if only growing a couple plants Not enough perlite for aeration May require supplemental nutrients for the flowering phase

Big Rootz All Purpose Potting Soil

When it comes to the best cannabis nutrients for soil, Big Roots falls short. Although the product claims to be built by growers for growers, this potting mix doesn’t appear to stand out.

Their ingredient list, lists pre-washed coco-coir, peat moss, and compost as their base materials. Coco-coir and peat moss are both inert substances, which also lead to pH swings within the soil. If the only food source is compost, then it’s likely that you’ll need to supplement your cannabis plants during the flowering phase.

Furthermore, pests, such as fungus gnats, may find the perfect environment in Big Rootz’ soil bag. Through the humidity of the soil or due to the compost, various pests have been found within this soil mix.

Lastly, the price is double (or triple in some instances) that of competing products. Considering a bulk of the ingredients are technically inert, you’re paying for only a fraction of actual plant food.

If you’re looking for the best soil mix for cannabis, you’ll likely find it elsewhere.

    Formulated with mycorrhizae for enhanced root growth Contains water-retaining peat Contains pre-washed coco-coir to reduce nutrient lockout Easy-to-use out of the bag
    Very expensive Possibility of pests in the soil It’s necessary to pH your water

Organic Super Soil Concentrated Strength

The Organic Super Soil Concentrated Strength is formulated to create the perfect growing environment for your cannabis plants. They contain a wide variety of beneficial microorganisms and organic nutrients, all of which work synergistically to provide rapid growth and bountiful yields.

Although Organic Super Soil Concentrated Strength is one of the best organic soils for cannabis, it’s still relatively expensive compared to other products with similar ingredients.

A single bag will not fill an entire 5-gallon pot, which makes this an expensive product if you’re growing more than one cannabis plant. Although the instructions recommend cutting this product with a standard potting mix, it won’t last very long.

Furthermore, the Organic Super Soil Concentrated Strength has a strong odor, which is a significant downside if you must be discreet.

Although Organic Super Soil Concentrated Strength is a premier potting mix for cannabis plants, it’s not recommended if you grow more than a handful of plants at once.

    Organic Contains a wide range of beneficial microorganisms Simple to use Perfect for all stages of growth
    Very expensive for its small size Will not fill a single 5-gallon pot May contain pests

Super Soil Autoflower Concentrate

Here we have a fantastic but pricey soil in the Organic Super Soil Autoflower Concentrate mix, which is a specially formulated version of the original “organic super soil”.

What makes Natures Living Soil so good is the microorganisms they include, everything from Glomus Aggregatum, Glomus Etunicatum, Glomus Intraradices, Glomus Mosseae, Pisolithus Tinctorius, Scleroderma Cepa, Scleroderma Citrinum, Trichoderma Harzianum and so much more!

This enables the cannabis cultivator to take their plants all the way from seed, straight through to harvest.

Natures Living Soil as always deliver a great organic Autoflower mix with some fantastic ingredients:

  • Organic Earthworm Castings
  • Azomite
  • Epsom Salt
  • Coconut Water Powder
  • Aloe Vera The Microorganisms
  • High Quality Bat Guano
  • Blood Meal, Bone Meal
  • Fish Bone Meal, Alfalfa Meal
  • Kelp Meal
  • Dolomite Lime

Yes, the Super Soil Autoflower Concentrate is expensive, and the quantities may not be the best, but when you’re after a premium autoflower soil and can stomach paying that little bit extra, then Natures Living Soil is always a safe bet.

    All-In-One Top Rated Established Soil Brand
    Price Could be Better

Purple Cow IndiCanja Organic Living Soil

Purple Cow IndiCanja is the new kid on block in terms of cannabis soil. They produce a whole host of different organic products, including seed starter mix, BIOActive vegetable Supercharger, right up to their Purple Cow IndiCanja Organic Soil.

This plant-based, natural organic soil mix contains the necessary minerals and nutrients to start your seedlings on their journey. Having been scientifically formulated and tested Purple Cow IndiCanja is lauded by the people at IndiCanja as good for all stages of plant growth, from young seedlings all the way through to flowering.

IndiCanja bills their soil as developed by growers, for growers as well as being ideal for beginners or pro’s, an all-in-one soil perfect for every stage of growth.

We already know about the qualities of someone like FoxFarm Soil, but the big question is, is there room for another organic soil? And ultimately does the Purple Cow IndiCanja have what it takes to sit among the top manufacturers?

Whilst a small number of consumers have experienced fungus gnats, the top-rated reviews from users so far would suggest they do, but the proof is in the pudding, or should we say the harvest…

    Certified by the Organic Materials Review Institute All-in-one Super Soil Good for Different Stages
    Expensive Some Bags May Be Infested With Fungus Gnats

Canna Terra Professional Soil Mix

CANNA Terra Professional soil is probably better known to cultivators that reside in the UK, as it’s not widely available in the USA or Canada.

This nitrogen-rich potting mix is not only highly rated but also very reasonably priced. With thousands of happy customers across the UK, Canna Terra has been in the soil business for a long time and knows it like the back of their hand. They make everything from potting soil to nutrients for plant cultivation.

What makes CANNA Terra Professional potting mix different from your everyday soil is the organic rich ingredients. Sphagnum moss peat, compost, worm castings, perlite, and a special ‘natural plant booster’ to name a few.

Canna Terra bills their potting mix as the ideal soil mix for indoor and outdoor cultivation.

The high value organic ingredients CANNA Terra uses such as airy peat moss helps to prevent diseases and promote exceptional root development whilst delivering formations of thicker stems and higher yields. Low sickness rates and faster metabolism helps to ensure increased production.

Because of the above characteristics, CANNA Terra Professional Soil Mix is preferred by many UK growers for growing a wide variety of plants.

CANNA Terra Professional Mix makes an excellent bed improver that delivers a complex water/air system ideal for virtually every form of cultivation.

    Highly Rated Great Price Popular in UK Cultivation Well-known Established Brand
    Availability Purchase from official store and look out for infestations

Best Soil for Cannabis: Buyers Guide

Buying soil for your cannabis plants might not seem important, but it’s one of the biggest deciding factors when it comes to plant health and overall yield.

Cannabis plants take anywhere from 4-6 months from seed to harvest. Clones may take upwards of 3 months to complete their life cycle. Not only is this a significant investment in time, but also the energy needed to fuel their growth.

This is why we’ve compiled this buyer’s guide to help you find the best potting soil mix for cannabis plants.

The Number of Plants

Before you give your hard-earned money away, how many cannabis plants will you grow? This is the first question you must ask yourself because it’ll paint a clear picture of how much soil you’ll need.

If you’re growing a single plant or 6-plants in small containers, you won’t require a bale of soil to fit your needs. Instead, you can get away with purchasing a single bag to keep your costs to a minimum.

However, if you’re growing multiple plants in large containers, then you’ll need to purchase multiple bags or a large bale-size bag of soil.

Whether you’re growing a warehouse full of cannabis plants or a single plant in your closet, knowing how much soil you need is the very first step you must take.

Stand-Alone or Supplement-Based?

This is the next important factor that you must consider. Do you want a soil mix that’s filled with all the necessary nutrition for your plants, or are you seeking a mild soil mix that can be amended with additional supplements?

If you choose a stand-alone potting soil product, then it might not be suitable for seedlings due to the overall strength. If you decide to go with a milder soil mix, then you’ll need to purchase additional nutrients.

Some growers find more freedom in purchasing soil mixes that contain fewer nutrients so they can fine-tune their overall overall nutrient content.

However, this method is only recommended for cultivators with experience. If you’re a beginner, fine-tuning your soil mix may prove to do more harm than good.

Beginners will benefit from utilizing a stand-alone soil mix for cannabis because it contains everything your crop needs to thrive from seed to harvest.

Although these products are not packed to the brim with nutrients, they will allow you to grow vigorous and high-yielding crops without the worry of nutrient burn.

Organic or Inorganic?

This is another essential question you need to ask yourself. Organic soil mixes contain ingredients that are from organic sources, which is scientifically proven to be better for the environment and your overall well-being.

Inorganic potting mixes tend to be cheaper in cost, but the price difference isn’t as large as in the past. Ultimately, this is a very personal question that only you can answer.

Living Soil Or Not?

Next, you’ll need to understand if you’re looking for a soil mix that contains beneficial microbes or not.

You may question this idea at first, but fungi (mycorrhizae) and bacteria play an integral role in breaking down nutrients for your prized cannabis plants.

In other words, beneficial microbes facilitate enhanced nutrient absorption, promote root growth, and provides a protective barrier against harmful bacteria and fungi.

Although you’ll likely see an increased price tag on soil mixes that contain beneficial microbes, it’s well worth it when you consider the effort it takes to grow high-quality cannabis flowers.

Is Growing in Soil Easy?

This is the main question that beginners ask. In fact, growing cannabis in soil is one of the easiest methods because it’s by far the most natural.

The vast majority of soil brands offer “plug-and-play” soil mixes. This means that you don’t need to do anything – except water them.

In these cases, you’ll need to look for soil brands that are already within the optimal pH range. By finding a pH balanced soil mix, you won’t need to worry about complicating matters with a pH pen.

Do You Need Additional Aeration?

Just like animals, your cannabis plants rely on oxygen to thrive. Alongside water and nutrients, air is a necessity when growing cannabis plants in soil.

Perlite is a primary material that cannabis growers use to increase the amount of air inside a soil mix. Not all soil brands contain perlite, so it’s essential to understand if your soil mix is too heavy.

Air pockets within your soil mix not only provide oxygen for the roots, but they also allow the root system to expand rapidly.

Furthermore, consistent air pockets within the potting mix enhance drainage, which will reduce the possibility of fungus and bacterial rot.

How To Grow Cannabis in Soil

Growing cannabis in soil is incredibly straightforward, especially when it’s already pH adjusted. Here are a few tips on getting your soil ready for your marijuana plants.

The first thing you need to do is fill your container 3/4 full with potting soil. Gently place your plant, and carefully add additional soil to cover the roots.

The cardinal rule is never compact the soil. Cannabis roots not only thrive from the nutrients within the soil mix, but also from the air pockets.

These tiny pores keep roots from rotting, so it’s essential that you refrain from pressing down on your soil mix.

If your soil mix is already pH adjusted, then you simply add water. Always allow your plant to satisfy its thirst before adding more water to avoid overwatering symptoms.

CLICK HERE >>> to read our fantastic 2021 Round-up Review & Guide of the Top 8 Best Soil for Cannabis | The Highest Crop

Choosing The Best Soil For Cannabis: A Home Grower’s Guide

Growing cannabis in soil is a great way to crop fat, flavoursome buds. Moreover, soil is one of the most forgiving substrates. What are the best soils for growing cannabis? What do you need to know if you want to make your own soil? Our guide answers these questions and more!

Home grower’s guide to the best soil for cannabis.

Contents:

When growing cannabis, using the right soil is crucial. Unfortunately, sourcing the best soil isn’t always straightforward. From cannabis-specific soils to bargain universal substrates and pre-fertilised types, the sheer amount of options can be overwhelming to novices. And what if you want to make your own soil from scratch?

Let’s talk about the best soil for growing cannabis.

WHAT’S THE BEST SOIL FOR GROWING WEED?

Not every soil is suitable for growing cannabis, and not all cannabis requires the same type of soil. Picking the optimal soil depends on the type of cannabis you’re growing, your climate, whether you’re growing at home or in the wild, etc.

Aside from these factors, there are some common traits among all cannabis soils. Let’s take a look at them:

Texture

Cannabis prefers a light and loose soil texture. A light texture promotes root development, and it ensures more oxygen reaches the roots for optimal growth and health.

Drainage ability

Cannabis soil needs to have excellent drainage. When you water your plants, it shouldn’t pool on top of the soil. If the soil has poor drainage, your plants will get sick and turn out subpar yields, or die.

Water retention

Just as important as good drainage is water retention, which is the soil’s ability to hold water. Good cannabis soil has an optimal balance of water retention and drainage.

pH value

pH is a chemical scale that indicates how acidic or alkaline something is. This is important, as cannabis only does well within a small pH range. A good soil for weed has a pH of about 6.0. A pH of 5.8–6.3 will be fine, but if it fluctuates too far outside of this range, you will get diminished yields. If the pH is seriously off, your plants will die.

Nutrients

Cannabis soil needs to contain nutrients so your plants can grow. Fortunately, almost all soils you can buy already feature them. Know, however, that these nutrients will often last only 3–4 weeks. Around the time your plants start to flower, the nutrients in commercial soils will likely be depleted. This is when you should begin to add nutrients.

If you’re growing without additional nutrients, your soil needs to contain organic substances such as humus, compost, worm castings, guano, etc. Microorganisms in the soil will turn these substances into nutrients for your plants to access on demand.

TRAITS OF QUALITY CANNABIS SOIL

If you’re using store-bought potting mixes, these are already optimally “tuned” for growing. Different story if you’re growing organically, though. Natural soil comes in four varieties: sandy, silty, loamy, and clay. But know that most soils consist of varying ratios of these soil types.

For example, a soil may be clay and loamy, or sandy and silty.

SANDY

Sandy soil is coarse with good drainage, but has poor water retention. When watered, nutrients such as nitrogen will also quickly get washed away. Sandy soil is easy to work with and is a viable choice for cannabis growers.

• Coarse structure
• Low pH
• Pros: Good drainage, keeps soil airy, high oxygen levels, easy to work with
• Cons: Poor water retention, needs frequent watering

SILTY

Silty soil is a medium-coarse soil type that’s rich in minerals and organic particles. Its water retention is good, yet it has adequate drainage. Silty soils are very easy to work with. The minerals and organic substances within make it one of the most fertile soil types.

• Medium-coarse
• Pros: Contains minerals and nutrients, retains water well
• Cons: Fair drainage

LOAMY

Loamy soil is a combination of sand, silt, and clay soils with added organic compounds. It is one of the best soil types for growing cannabis as it offers optimal water retention and drainage, and it’s rich in nutrients and oxygen. Downside: This type of soil can be expensive.

• Mixture of sand, silt, and clay
• Pros: Excellent water retention and drainage, contains nutrients, high oxygen levels
• Cons: Expensive

Clay soils consist of fine mineral particles. This type of soil is heavy and not easy to work with. It is very rich in nutrients and minerals, which makes it a good option to include in organic grows. Clay soil retains water well, but has poor drainage.

• Fine particle size
• High pH
• Pros: Rich in nutrients, retains water
• Cons: Poor drainage, heavy and compact, hard to work with

AMENDMENTS TO IMPROVE SOIL QUALITY

If you’re working with natural soil, chances are it won’t be perfect for growing cannabis—not from the start, at least. The texture may not be optimal or it may have poor drainage, for example. But you can improve any type of soil by adding amendments, most of which can be found in your local grow shop.

COCO COIR

Coco coir (coco fibre) is made from coconut husks. These light fibres provide excellent water retention and can lighten compact soils. Some use a pure coco substrate with special nutrients to cultivate their weed. But to amend existing soil, it’s a good idea to add anywhere up to 30% coco coir, depending on the composition of your base soil.

PERLITE

Perlite is the most widely used soil amendment. Perlite consists of very light, bright-white rocks that greatly improve the drainage and airiness of the soil. Perlite also has decent water retention. To amend your soil with it, add 10–15% of perlite. You can add more, but then your soil may become too light and nutrients may leach out. Good-quality commercial soils often come with added perlite.

CLAY PEBBLES

Most cannabis growers are familiar with using clay pebbles as part of a hydroponic setup. But did you know they can also be used to enhance soil structure? Adding clay pebbles to the bottom of your raised beds and containers will assist with drainage and prevent water from pooling at the base—a large risk factor when it comes to root rot.

Growers can also add clay pebbles to the top of containers and beds to serve as a mulch. Here, they help to trap moisture in the growing medium by preventing excess evaporation. Clay pebble mulch also casts shade over the top layer of soil, suppressing weeds and keeping beneficial microbes sheltered from the hot rays of the sun.

VERMICULITE

Vermiculite, just like perlite, is a heat-treated mineral you can use to make your soil lighter.It is also excellent at retaining water. Although vermiculite shares some characteristics with perlite, the two have opposite uses: Use perlite to increase drainage and airiness, and use vermiculite to increase water retention. Luckily, you can use both, as perlite and vermiculite work well together. Around 10% vermiculite is beneficial.

WORM CASTINGS

Worm castings are normally seen more as a nutritional soil amendment as they contain a plethora of useful microorganisms that benefit growth. But worm castings will also improve the texture, drainage, and water retention of your soil. When amending your soil with worm castings, use about 25–30%.

NUTRIENTS

If your DIY cannabis soil is rich in organic material, you will likely not need to add nutrients to it. As a matter of fact, some growers make the mistake of adding manure and vegetable scraps to their soil to “fertilise” it. This results in soil getting “too hot” for the plants, hurting their development in turn. If you want to put your vegetable scraps to good use in your garden, you first need to compost them.

If you think you need to amend your cannabis soil with nutrients, you can easily purchase bottled solutions tailored to a plant’s phase of growth.

PHOTOPERIOD VS AUTOFLOWERING

One factor to consider when choosing the right soil for your weed is whether you’re growing photoperiod or autoflowering plants. Autoflowers prefer a light mix with fewer added nutrients. A great substrate for your autoflowering ladies is a 50:50 mix of coco coir and a light, peat-based soil with some added perlite for drainage.

When growing autoflowers, stay away from heavily fertilised soils and certain amendments like bat guano, as these will be too hot and overload your plants with nutrients. The same is true for cannabis seedlings, which do not like high levels of nutrients.

Plant autoflowers in their final growing container in a cup-sized hole in the centre of the soil. Fill the hole with seedling/starter soil with no nutrients and place your seed in it. This way, your seedling can grow without being surrounded by the hot soil, which would otherwise burn it.

For photoperiod plants, start them out in small seedling pots/cups with soil that has little to no nutrients. Replant after a few weeks. More mature plants will tolerate higher nutrient levels much better than seedlings.

STORE-BOUGHT VS HOMEMADE

If you’ve just started growing cannabis, it may be best to simply get ready-made soil from the grow store. The reason for this is that good-quality cannabis soil normally contains everything your plants need for healthy growth, in the optimal ratios. If you want, you can further improve your store-bought soil with a handful of perlite for increased drainage, but otherwise you should be good.

BASIC CANNABIS SOIL RECIPE

On the other hand, there may come a time when you want to make your own soil. After all, why spend good money on soil if your homemade version is even better? Here is a recipe for a basic homemade cannabis soil.

INGREDIENTS

• 1 part vermiculite
• 1 part coco coir peat
• 2 parts compost
• ½–1 cup worm castings (or humus)

DIRECTIONS

1. Sieve the compost to remove larger chunks.
2. Soak the coco coir peat in warm water. Check the directions of the product to see what kind of volume you will be getting.
3. Use a bucket and mix the coco coir peat with the vermiculite.
4. Add the compost.

Done! Double-check the pH value of your homemade soil. It should be in the range of 5.8–6.3.

The above is a basic soil recipe that will serve you well for most grows, indoors and outdoors. But you can further enhance your soil mix by adding organic fertilisers.

Bat guano is an excellent and inexpensive organic fertiliser for flowering marijuana. You can add it to a soil mix or spread it on the topsoil and water in later. You can also look into time-release nutrients such as Easy Boost Organic Nutrition pellets. Add a cup of these to your soil to feed your plants for their whole life cycle—100g is enough for 2–3 cannabis plants. All that’s left to do is water!

NO-TILL CULTIVATION

No-till cultivation is a gardening method that allows the soil to remain undisturbed (no digging, stirring, overturning, etc.). This way, microorganisms in the soil can create a thriving ecosystem that replenishes the soil with good bacteria, helpful fungi, and other living organisms. No-till cultivation promotes organic matter retention and water absorption because nutrients are constantly being recycled throughout the soil.

To learn about no-till cultivation and its benefits, check out this article!

AMENDMENTS FOR ARID/DROUGHT CONDITIONS

If you’re growing outdoors in a hot climate such as Southern Spain or a similar location, you don’t want to “cook” the root zone of your plants. If you’re using pots, choose white plastic containers, as these help to keep the soil temperature at a reasonable level under the beating sun. You can also look to air pots or smart pots to keep the roots of your cannabis plants cool. As an additional measure to protect the soil from fluctuating temperatures, you can add layers of dry straw onto the topsoil.

If you’re growing in drought conditions where your plants may at times go weeks without rain, or if you can’t make daily trips to your guerrilla grow location, use water-absorbent polymers to keep them hydrated! You can get these from hydroponic grow stores or can cut them out of diapers.

For a guerrilla grow in dry conditions, dig a hole about 60cm deep and 30cm in diameter. Add a few cups of polymer crystals to the bottom of the soil mix and fill up with the remaining soil. Place your plant into the soil and water liberally. As your plant grows, the roots will soon reach the polymers so it can drink even during drought. Tip: Soak the polymers in a light nutrient solution for a double benefit!

Soil is the medium of choice for most cannabis cultivators. Here is what you need to know to get the most out of your soil grow!