best soil to grow cannabis uk

Bad Cannabis Soil This soil is muddy, clumpy and waterlogged. It retains too much moisture, which makes it really easy to overwater your plants.

If you get the soil part right, you have almost everything you need to get to harvest! With the correct texture, drainage and water retention, you’ve got a perfect base. Add good soil cannabis nutrients, especially in the budding phase, and you should get to harvest with great results!

Vermiculite.

It’s easy to get caught up thinking about what nutrients and amendments are in the soil, and those are important, but perhaps the most important aspect of any soil is actually its texture, ability to drain, and overall water “holding” ability.

This plant is growing in Fox Farm Ocean Forest Soil.

More About Common Amendments to Alter Texture, Drainage & Water Retention of Soil.

Generally, anything labeled as an “organic potting mix” will work. This type of mix hasn’t been amended with chemical slow-release nutrients, which is one of the main things you want to avoid with soil for cannabis. I know it sounds like heresy, but even the Miracle-Gro version of “organic potting mix” will work okay, because unlike their original potting mix it doesn’t contain chemical nutrients (though it still has poor drainage and moisture retention – almost any other type of organic potting mix is better!).

Some popular soil examples that I’ve used with good results include:

Perlite.

The composting process creates a “living” soil that is full of microorganisms in the rhizosphere (area around the roots). Properly composted soil has nutrient sources that slowly break down over the course of your plant’s lifecycle. It very closely mimics what happens in nature.

Bad Cannabis Soil Although this seedling is over a month old, it has stayed tiny. Its growth is stunted by the thick heavy soil that holds way too much water and not enough air. Note how some of the soil looks like one solid object.

Note: You’ll likely never see any soil mix with ALL those ingredients, but I wanted to share examples of common cannabis-friendly ingredients and amendments that often appear on the label of good soil 🙂

The following video shows the soil texture you want (this is Coco Loco, an excellent soil for growing cannabis)

In order for a cannabis plant to grow and thrive, it needs a good mix of both water and oxygen at the roots at all times! Too much water and the plant roots can’t get enough oxygen (lack of oxygen at the roots is why plants get droopy from overwatering) but on the flip side if there’s not enough water retention the roots can be injured from drying out too quickly!

Good Cannabis Soil The plant is growing in organic, composted “super soil” which has enough amendments to last your entire grow, so the only thing you do is add water!

Signs of Good Cannabis Soil.

Some growers choose an amended and composted “hot” soil that slowly releases nutrients over time. With this type of soil, you typically just add water or natural supplements like worm tea from seed to harvest. Other growers prefer a lighter potting mix so they have more control, and give nutrients in the water once the plant roots have used up the nutrients in the soil. But which brands can you trust?

Try to get soil that looks like this!

Here’s organic “super” soil up close.

Good Cannabis Soil Another light, rich soil mix with great drainage. Although there is a wood chip in this picture, for the most part the mix is completely composted and broken down. It’s normal to see some wood pieces in composted soil, but you don’t want to have to wait for a lot of wood to break down while your plants are growing – you want all that rich nutrient goodness to be readily available to your plant roots 🙂

Note: Don’t worry, there’ll be examples of good and bad soil in just a bit!

I think most growers agree a good cannabis soil should look dark and rich, with a loose texture that drains well and can hold water without getting muddy (you want wet soil, not dirt-batter!). But beyond that, what do you look for?

Example of “Good” Cannabis Soil Ingredients.

Although that list looks vague and complicated at the same time, the requirements you want to meet are actually pretty simple; let me break it down!

However, when growing with Super Soil, it’s a good idea to avoid watering too much at a time, as extra runoff waterwill drain away some of the nutrinets. Try to give just enough water to saturate the soil with very little extra coming out the bottom. Since you won’t be adding more nutrients through the grow, you want to conserve what’s in the soil!

What gets the best results for growing cannabis is a soil with a light texture that is good at retaining water…but not too much!

What should you look for in good cannabis soil?

Recommended soil nutrients:

Bad Cannabis Soil Cannabis soil should not have a whole lot of big visible wood chips in it. That means the soil hasn’t been fully composted, and all the nutrients and goodness in that wood is mostly unavailable to your plants.

The “micro-herd” in the soil delivers nutrients directly to your plants. As long as you’re using decent water, you usually don’t need to worry about pH or other things that can disrupt nutrient absorption in regular soil.

Ok so after my previuos 2 attempts didnt go to well , both either ended up with p lockout out or n defiency , ive decided to give it a go with some decent soil as the last soil i used was just basic sh!tty soil. Im going to be growing autos, so and advice on soil and which nutes to use with soil appreciated, and also if nutes are going to be needed in veg as will there be enough nutes in veg for the short veg of an auto or will more needed to be added , please bare in mind im in the uk so fox farm soil isnt available.

The 2 ive been lookin at are bio bizz all mix but ive heard more perlite is needed to be added and another called plagron.

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

Sohum Living Soil Mix comes with a specially blended mix of ingredients that includes kelp, meal, crab meal, bone meal, and alfalfa. The soil also contains perlite which helps with water retention and peat moss. Lastly, worm castings are added as they contain beneficial microbes for healthy plant growth making this mixture perfect for indoor or outdoor cultivation.

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

Brut super soil features some superb natural ingredients including –

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

Is Growing in Soil Easy?

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

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

Developed by experienced professionals, this super soil has all the good bacteria and microbes you want, and need. The included ingredients have the most robust, beneficial microbial life alongside the perfect mineral balance.

We’ve previously featured their highly rated and popular worm castings in our best worm casting review. Well, Brut has now released this fantastic new all-in-one soil to compete with the more established well-known brands.

Roots Organics Original Potting Soil is an ideal choice for fast-growing, heavy-feeding plants. It has a balanced air to water ratio of porosity and water retention that allows you to frequently feed your prized possessions without worrying about their roots rotting or drying out too quickly. Roots Organics soil bags double as pots – just cut the top off, drop in your plant/seedling (or sapling) with ease!

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

Sohum Soil has been purposely created to deliver rapid development of your plant’s root system and eliminates the need to flush, alongside increasing yields and producing trichome-covered buds full of flavor and aroma.

This is definitely something that should be taken into consideration as if you’re growing autoflower plants, then they will likely prefer a cannabis soil mix that is light with few nutrients.

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.

This well-blended soil mix includes ingredients such as;

Fox Farm Salamander Soil Mix.

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

This potting soil from BuildASoil is one of their heaviest amended soil recipes to date and a firm favorite in the growing community and is available in sizes of half a cubic foot, one cubic foot, one cubic yard tote, pallet size, and truckload!

Loamy soil is a mix of organic compounds and various ratios of clay, silt, and sand. Loam soil mixes are a popular choice among cannabis growers and should be near the top of your list when searching for the best soil for cannabis as they offer excellent drainage alongside ideal water retention. A quality organic loam soil will be rich in nutrients and provide plenty of oxygen.

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.

Although you’ll spend a substantial amount of money for FoxFarm 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.

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

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.

SoHum Living Soil.

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.

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

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.

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

FoxFarm Ocean Forest Potting Soil 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.

This formula has been the cannabis growers favorite because of the quality and testing that has gone into the making of it alongside being ready to go as soon as you open the bag.

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.

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