Mr. Canucks Grows. Also known as Matt. Undeniably the most popular YouTuber who grows and also the strongest.

So I studied Matt’s growing style and it consists of 5 ingredients, Gaia Green Soil, Gaia Green Grow and Bloom Amendments, Worm Castings and Mykos which is mycorrhizae, Its a pretty simple mix and the only issue I had was trying to get the Gaia Green Soil.

I swear they got more restrictions to import this soil then most drugs. I tried to order it off of amazon, but it got denied at the border by customs. So, I reached out to the company and still couldn’t get it.

Mr Canucks Fan: 0:19
Mix and Preparation: 0:30
Price Analysis: 3:14
Lab Analysis: 3:43

Price wise, The total cost for a 5 gallon pot prorated is about $21 and the initial cost for all the supplies was $168 which is enough for 4 5 gallon pots.

A breakdown on the cost analysis is in the description. Its probably cheaper to get all this stuff at your local Hydroponics store but if you want to save on gas, check the links:

Promix HP $40.2 Used 1/5th bag, so $8.06
Gaia Green Bundle $68.00 4.85 lbs, used approximately 10 tbsps which is 1/15th or $4.53
Worm Castings $30 30 lbs, Used 1/4th of the bag so $7.50
Mykos $30 2.2 lbs, used 2 tablespoons which is 1/35th so 86 cents


I’m gonna start the plants off in
1.5 gallon plastic pot:
.375 gallon worm castings (6 cups)
1.125 gallon promix (18 cups of promix)
4.5 tablespoon of 4-4-4
Coat with mykos

The second pot Ill prepare will Transfer to 5 gallons fabric pot:
2.625 gallon promix
.875 worm castings. (14 cups)
5.25 table spoon 4-4-4
5.25 tablespoon 2-8-4
Coat with mykos

30 days into flower top dress with:
20 tablespoons of worm castings (1.25 cups)
5 tablespoons is 2-8-4

Promix HP is pretty basic and must be amended for the best results. After running a lab test on this soil, I find the pH runs high and all of the levels for macro and micro nutrients are acceptable. The only macronutrient that is at optimum levels is phosphorus.

Overall, the gaia green amendments for grow and bloom both have ideal NPK ratios that I am comfortable with and the addition of Mycorrhizae will help break down the nitrogen in the worm castings. Both of the gaia green amendments have a healthy amount of calcium, but the only issue I anticipate with this grow is the lack of magnesium. Remind me in the comments if any issues occur with this grow in my future videos. Other than that, this style seems solid and I’m looking forward to seeing how it stands up to the other slots.

This mix will be used in our Meta Soil Project which is a series of episodes that documents 6 different soil mediums grown side by side to see which ones produces the best quality.


Mr. Canucks Youtube Channel
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To see the full day to day grow journal

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