• 1 ten gallon bag of high quality Organic Potting Soil
  • 6 pounds of Earthworm Castings (1 lb. of casting = about 1 gal)
  • 3.2 gallons of perlite or vermiculite or pumice or rice hulls – Aeration
  • 1 & 1/2 cups of Blood Meal
  • 1 cup of Bat Guano
  • 1 cup Bone Meal
  • ½ pound of Soft Rock Phosphate
  • 1 & 1/2 tablespoons of Epsom Salt
  • 1 cup of Agricultural Lime
  • 1 cup of Azomite or Rock Dust
  • 1 cup of Humic Acid

You need to blend these ingredients with water and let the microbial activity break down the nutrients in the amendments for 2-4 weeks. Use 1/8 of this mix at the bottom of your first container and then 1/4 at the bottom of the 2nd and then fill the bottom half of your last container with this mix. You can use the potting soil that you have to fill in the rest.

Just add water* to this mix and you should be growing some strong and healthy cannabis plants. If you want to take your marijuana growing to the next level, then you should take a look at the tea page and water your plants every week or so with an added boost of nutrients and microbes.

*Municipal water has chlorine and sometimes chloramine in it to prevent any and all bacteria from growing. This is not what you want when you are growing organically. You want as many beneficial bacteria as possible so that your soil thrives. Your options are;

Well water – Rain water – Reverse osmosis – Distilled water – Tap water

If you leave a bucket of tap water water out in the open air, the chlorine will dissipate after several hours however if chloramine is present, it will not. What you can do is add ascorbic acid (vitamin C) at a rate of 3 grams/100 gallons and allow it to sit for several hours. Make sure you dissolve the tablet in the water. Also, you could add ¼ teaspoon of unsulphured molasses to 5 gallons of water and allow it to sit for a few hours.

Conversion Chart

1/2 cubic foot = 3.74 gallons = 14.3 litres