Step 4: Fill the bottom 1/3 to 1/2 of your pot with this special super soil, and fill the rest with untreated soil
There are many recipes for mixing soil, but the one included below has been tried-and-tested for growing marijuana, and has proven itself to produce outstanding organic buds.
Unlike with chemical nutrient, in organic growing there is no “middle man” extracting just the active parts of something to be turned into an easily soluble salt.
Step 3: Allow to “cook” for 30-60 days (keeping soil moist but not soggy)
Lay everything out on a tarp as evenly as you can. Lay the soil, worm castings and perlite first in even layers. Then evenly sprinkle the rest of the larger amendments across the entire surface (except for the epsom salt, sweet lime, azomite and humic acid, and beneficial bacteria, which are needed in extremely tiny amounts and will be added at the end).
No matter how you paint it, those inorganic salts pollute our seas and water tables.
Then top off with untreated organic soil.
Never attempt to adjust the pH until you know something is wrong!
Credit: Thanks to subcool, a great marijuana breeder, for this recipe.
Kelp meal contains over 70 different vitamins and minerals. It helps promote overall plant health, vigor, and tolerance to stress, pests ,and disease. It is also a renewable, sustainable resource – so that’s a huge plus.
Beyond all of these broad categories, each strain will also have unique attributes that may make it more or less desirable to you. Find what suits your needs! What works for us may not be what works for you. To read more in-depth on the differences between sativa, indica, and autoflowers (including their health benefits) check out this post.
Option 1: Our Organic Cannabis Soil Recipe
If possible, use dechlorinated water. It isn’t a deal-breaker, but the plant and soil microbes will definitely appreciate it. If you are on city tap water, allowing a bucket of water to sit out overnight can help the chlorine dissipate. We mostly use our captured rainwater. Another option is to use a simple hose carbon filter to remove chlorine.
Feminized, Regular, or Autoflower Seeds
After sprouting indoors, cannabis seedlings need strong bright light – such as that provided by a supplemental grow light. Unfortunately, a sunny window will not provide enough light, and the plants will get extra tall, weak, and leggy. Once our seeds pop indoors, we move the cannabis seedlings to our greenhouse for a few weeks before going fully outside. We also use lights for growing autoflowers in the off-season in the greenhouse. (See this article for more information about choosing and using grow lights.)