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Fast & Easy Powerful Cannabis Soil Mix

Fast & Easy Powerful Cannabis Soil Mix

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HOWDY TO ALL, Rev here bringing you guys a really potent and simple soil blend. I know from so many emails that there are many of you that are new-ish to growing legal cannabis, and are overwhelmed by all the information coming in on this subject. So, what you choose to do is just used bagged soil, and use some top dressings and/or teas; and hey, by all means if you are happy with your methods, don’t change them in any big way. But, rather than just plain old bagged soil, try this blend and see what you think. Now this is not nearly as potent as something more complex like my TLO Supernatural Soil Mix, but it will work way-way better than just the straight bagged soil. Let’s first consider our bagged soil options.


My favorite commercially available soil mixes are as follows; the Potting Soil by G&B (about $10.00 USD) and Fox Farm’s Ocean Forest soil (about $15.00-20.00 USD). But essentially, you just need a good mix that is labeled 100% or ALL organic in the ingredients. Look at the ingredients listed on the bag, look for the good stuff like castings, things like oyster shell, guanos, kelp meal, etc. As far as bagged earthworm castings, most of these that come in bags that are commercially available are good or great; and living worms in the castings is a very good sign.


Seriously always try and avoid using soil mixes that are high in peat moss levels, when you are growing using all-natural styles that are probiotic (life friendly). I find these soils to be a little to favorable to the fungus; nothing wrong with some fungus in your soil, just a problem when it becomes too dominant within a growing container of soil used for growing cannabis; something like blueberries, or African violets would love it. Most bagged compost I have ever seen is seriously weak/useless compared to compost you can easily make at home. Get a compost tumbler and really kick your composting game up a big notch.


Rev’s Simple Soil Mix for Newer Growers

  • 2 to 3 cubic feet of bagged soil (about 12-18 gallons)
  • 1 to 1.5 cubic feet of small nugget size perlite, or pumice, or vermiculite (or any combo of these)
  • 1 to 1.5 cubic feet of earthworm castings or homemade awesome compost
  • 1 to 1 ½ cups fine-screened and composted steer manure
  • 1 cup of greensand (silicone, potassium, and much more)
  • ½ cup of Crab Meal (chitin and calcium etc.)
  • ½ cup DE (diatomaceous earth)
  • 2 to 3 tablespoons of Epsom Salt (magnesium and sulfur: DO NOT go overboard with this)
  • 2 to 3 heaping tablespoons of soft rock phosphate, OR bone meal – soft rock phos. 1st choice


Even Simpler and Still Better than Bagged Alone

  • 2 to 3 cubic feet of bagged soil (about 12-18 gallons)
  • 1 to 1.5 cubic feet of small nugget size perlite, or pumice, or vermiculite (or any combo of these)
  • 1 to 1.5 cubic feet of earthworm castings or homemade awesome compost
  • 1 cup of greensand
  • 2 to 3 tablespoons of Epsom salt
  • ½ cup DE (diatomaceous earth)
  • ½ cup bone meal (I use Fishbone Meal myself)


Don’t worry that you don’t see anything like kelp meal, or blood meal, the additions of these kinds of organic matter really needs to be fast composted (“cooked”) first, before using. These soil mixes will work in beautiful symbiosis with quality bagged soil mixes, which always contain high percentages of organic matter to start with, like kelp, guanos, castings, etc. that have already been composted. These soil mixes are ready to rock no composting needed. The reason for the DE is two-fold, silicone, and calcium.


  • It is uber important that you do not use chlorinated water with these amended soil blends.
  • Water with a PPM value (use a cheap TDS meter to read) of between 70-90 PPM will work excellent with these mixes, assuming the water has “normal” values of magnesium and calcium present.
  • Try and use mostly just good water on your plants. Transplant more often, move up slowly in small increments regarding container sizes each time. This builds denser root systems.
  • If you have something like well water that is high in PPM just “cut” the well water using rain/reverse osmosis/distilled water to reach desired PPM level. Remember the formula so you can just knock it out without having to keep metering it each time.


Problems growing organically are far more often “operator error” than anything else. Things like watering skills matter huge; using those self-watering style of growing containers can really help with this problem. Overfeeding is another huge thing, so try and resist urges to feed, you will learn that with a bit of patience, organically grown container plants are quite capable of taking care of themselves. Under 1,000 watt HID or their equivalent regarding lighting, I would flower in 7 gallon containers. Under 400 watt HID or their equivalent, I would use 5 gallon containers to flower in.


I collect some of my compost in a large bowl in my kitchen, including a lot of coffee grounds and filters (used) so it’s always fairly moist. This bowl I use for about 7-10 days without any foul smells, before transferring my organic scraps to my composting tumbler; I recommend these tumblers highly.


Be well my fellow growers, and I’ll be back soon with more stuff for your melons and your gardens, so stay tuned, and as always, keep the shiny side up and the dirty side down. Cheers.



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