My Store:

Where would you like to shop?


352 Queen st
E Unit 4 L7J 1W6

Select Store


115 Talbot St W
Aylmer, ON N5H 1J6

Select Store


20 Bridge St W.
Belleville, ON K8P 1H7

Select Store


153 West St
Brantford, ON N3T 3G4

Select Store


43 Main St,
Brighton, Ontario K0K1H0

Select Store


2107 Parkdale Ave
Brockville K6V 0B4

Select Store

Cambridge - King

3-960 King St E
Cambridge, ON N3H 3P3

Select Store

Cambridge - Main

51 Main St
Cambridge, ON N1R 1V6

Select Store


52 Bridge Street E
Campbellford, ON K0L 1K0

Select Store

Chatham King

85 King St W
Chatham, ON N7M 1C7

Select Store

Chatham McNaughton

9-170 McNaughton Ave
Chatham, ON N7L1R4

Select Store


25 Second St E,
Cornwall, ON K6H 1YN

Select Store

Fort Erie

201 Jarvis St.
Fort Erie, ON L2A 2S7

Select Store


4 Courthouse Square,
Goderich, ON N7A 1M3

Select Store

Grand Bend

31 Ontario St N
Grand Bend, ON N0M 1T0

Select Store


125 Muskoka Rd S
Gravenhurst, ON P1P 1X3

Select Store

Guelph Gordon

951 Gordon St #8B,
Guelph, ON N1G 4S1

Select Store

Guelph Wellington

715 Wellington St W Unit 6,
Guelph, ON N1H 8L8

Select Store


326 Ottawa St N
Hamilton, ON L8H 4A1

Select Store


513 11th Avenue
Hanover, Ontario N4N 2S3

Select Store


30 Main St E
Huntsville, ON P1H 2C8

Select Store


8 Circle St
Kapuskasing P5N 1P4

Select Store


4396 KING ST E Unit 1

Select Store


11 Erie St S,
Leamington, ON N8H 3A6

Select Store


780 Wallace Ave N
Listowel, ON N4W 1M2

Select Store


212 King St #1
Midland, ON L4R 3L9

Select Store


True North Cannabis Co.
Mississauga Dispensary
1370 Dundas St E unit 7,
Mississauga, ON L4Y 2A5

Select Store


7 Market Square Napanee
Ontario K7R 1J4

Select Store

New Liskeard

324 Whitewood Ave W
Temiskaming Shores, ON P0J 1P0

Select Store

Niagara Falls

4695 Queen St
Niagara Falls, ON L2E 2L9

Select Store

North Bay Algonquin

1720 Algonquin Ave
North Bay, ON P6A 1Y7

Select Store

North Bay Main

496 Main St. East
North Bay, ON P1B 1B5

Select Store


UNIT-3 1076 Cedar St,
Oshawa, Ontario L1J 3R9

Select Store


1262 Wellington St. W,
Ottawa, ON K1Y 3A5

Select Store

Owen Sound

978 3rd Avenue E
Owen Sound, ON N4K 2K9

Select Store

Parry Sound

34 Seguin St
Parry Sound, ON P2A 1B1

Select Store

Port Colborne

349 King St
Port Colborne, ON L3K 4H2

Select Store


129 Mitton St S
Sarnia, ON N7T 3C5

Select Store

Sault St Marie

898 Queen St. E
St Sault St Marie, ON P6A 1Y7

Select Store


22 Robinson St
Simcoe, ON N3Y 1W4,

Select Store

St. Catharines

92 Pelham Rd
St. Catharines, ON L2S 1T1

Select Store


673 Ontario St
Stratford, ON N5A 3J6

Select Store


51 Front St W
Strathroy, ON N7G 1X6

Select Store


372 Riverside Drive
Sudbury, ON P3E 4K3

Select Store


110 Broadway
Tillsonburg, ON N4G 3P6

Select Store

Timmins Riverside Drive

211 Craig St.
Timmins, ON P4N 4A2

Select Store

Timmins Third Ave

214 3rd Ave,
Timmins, ON P4N 1E1

Select Store


82 Division St
Trenton, ON K8V 4W5

Select Store


Select Store


16 Steel St
Welland, ON L3B 3L9

Select Store


1368 Ottawa St
Windsor, ON N8X 2E8

Select Store

Close Icon

Growing 101: Best Soil for Cannabis Growth

Published On:
March 8, 2023

Read time:
4 Minutes

a cannabis plant growing in soil

Learning how to grow cannabis, especially for the first time, can be an overwhelming journey. Among all of the main factors that you need to be on top of, cannabis soil selection is of utmost importance, for several reasons as discussed in this blog.

True North Cannabis Co. always has the novice cultivator in mind. With that being said, this helpful guide includes some key factors you’ll need to consider when choosing the best soil for cannabis farming. 

Before “digging deep” into the list of the best soil for cannabis growth, we recommend taking a refresher course by learning the easiest strains to grow so you’ll have a better idea of what’s most likely to thrive in your care. 

Why Does the Type of Soil Matter?  

Perhaps the main element that needs to be studied—quite literally and figuratively—is the type of earth that houses your seed. Know that not all types of soil can efficiently grow cannabis, and alternatively, not all cannabis strains require similar characteristics when it comes to soil. 

These factors can be quite tricky if discussed one by one, so let’s focus on the common traits among the best soil for cannabis cultivation. 

The Best Soil for Cannabis Growth is Nutrient-Packed 

Compared to hydroponics systems, growing cannabis in soil ensures not only healthy crops but a nutrient-packed environment that will help your plant thrive in the healthiest way possible. Just like all types of plants, cannabis requires a set of nutrients during all its growth stages. So what are said nutrients when choosing the best soil for cannabis cultivation?


Nitrogen is the most important nutrient in cannabis soil selection as it is the main composition of chlorophyll, and obviously—a key player in the photosynthesis process. Plant tissue is mainly made up of nitrogen, which is why there are instant signs of deficiency when there is a lack of it. 

an adult cannabis plant in soil


Ensure that the cannabis soil you pick has lots of phosphorus, as it is vital to new growth, and your plant’s nutrient intake. Soil with fish bone meal, soft rock phosphate, crab meal, and seabird guano are organic alternatives to the limiting supply of this nutrient due to mining.  


Working hand-in-hand with phosphorus, potassium protects the root structure by making it resilient. It also increases the mass, volume, and density of buds, resulting in a thicker, more attractive yield. It replenishes crops during drought and works alongside nitrogen to build up the plant’s protein compound and amino acids. Compost, greensands, sulphate of potash, and wood ashes are widely used in cannabis soil mixes as these hold a lot of this nutrient.

Calcium and Magnesium 

When choosing the best soil for cannabis, calcium and magnesium must be present. Why? The answer is as simple: They are the two nutrients that serve as the building blocks of cannabis plants.

Calcium makes the cell walls strong and makes plants resist pests, diseases, and heat stress. Cannabis plants need magnesium in all stages of life and are present in the leaves–hence proving importance in light absorption and developing carbohydrates and sugars. 

To ensure that your mix is the best soil for cannabis, include calcium-rich elements such as lime, eggshells, and gypsum. On the other hand, Epsom salts and dolomite lime are major sources of magnesium. 

The Best Soil for Cannabis Growth Has the Right pH Value

If you haven’t read about it yet, the “pH scale” is a chemical scale that shows how acidic soil is. Knowing this for a fact is truly important when choosing the best soil for cannabis as the plant only thrives well within a shy pH range. 

Good cannabis soil has a pH level of 6.0, with 5.8 to 6.3 being the maximum boundaries. When the soil has too little or too much, the yield will grow deficiently, and if the soil is too far off, the plant will ultimately die. 

A soil test is always recommended, and here are some accredited soil testing facilities in Ontario if you wish to do one. 

a person holding a lit joint

The Best Soil for Cannabis Growth Retains and Drains Water at Optimal Levels

Too little or too much water is a no-no for all plants. The best soil for cannabis needs to be loose, hence have good drainage abilities. Having said that, soil that can hold water in just the right amount is ideal when growing cannabis.

Among all soils, the best cannabis soil type is loam, as it has both qualities and is rich in nutrients. If you choose to work with other types of cannabis soil, mixing in coco coir, perlite, vermiculite, clay pebbles, and worm castings can improve drainage and retention, as well as add certain nutrients that can be beneficial for your plant’s growth. 

Test Your Green Thumb by Growing Cannabis

Canadians can legally grow up to four cannabis plants per residence—so put your knowledge to the test this spring and summer and cultivate your own flower! Who knows, you may even uncover a skill you didn’t know you possessed.

Growing healthy, potent flowers takes time and dedication, but with high-quality seeds, soil, and the right propagation setup, you can reap the rewards in no time.

Contact True North Cannabis Co. today to learn about our wide array of affordable strains that can motivate and guide you into choosing the right ones to start with.

Share this article

Keep Reading

Nourish Your Skin With Cannabis Topicals

Read the Article

Vaping vs Smoking Weed: What’s the Difference?

Read the Article

Top Things To Do While High in Listowel, Ontario

Read the Article

Find your
True North

True North Cannabis has democratized the industry making quality cannabis affordable, and accessible for our customers.

True North Cannabis Co. Logo

Are you over 19?

Welcome to True North Cannabis Co!

Please verify your age to enter.

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Shop Cannabis