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how to mix soil for growing weed

How to mix soil for growing weed

The composting process creates a “living” soil that is full of microorganisms in the rhizosphere (area around the roots). Properly composted soil has nutrient sources that slowly break down over the course of your plant’s lifecycle. It very closely mimics what happens in nature.

Note: You’ll likely never see any soil mix with ALL those ingredients, but I wanted to share examples of common cannabis-friendly ingredients and amendments that often appear on the label of good soil

Bad Cannabis Soil
Don’t use dirt from outside! It almost never works, especially if it looks like this!

Some growers choose an amended and composted “hot” soil that slowly releases nutrients over time. With this type of soil, you typically just add water or natural supplements like worm tea from seed to harvest. Other growers prefer a lighter potting mix so they have more control, and give nutrients in the water once the plant roots have used up the nutrients in the soil. But which brands can you trust?

Kind “Super” Soil (Living Soil)

I think most growers agree a good cannabis soil should look dark and rich, with a loose texture that drains well and can hold water without getting muddy (you want wet soil, not dirt-batter!). But beyond that, what do you look for?

If you are willing to keep transplanting to bigger pots as your plant uses up the nutrients in the soil, you don’t need to supplement with extra nutrients. However, even if you grow in the same pot from seed to harvest, Fox Farm offers a complete nutrient system that is also formulated for plants like cannabis and goes perfectly with their soil to make sure your plant is getting the right levels of nutrients throughout its life.

Their Ocean Forest soil mix is “hotter” soil (higher levels of nutrients) that contains ingredients that cannabis plants love, including earthworm castings, bat guano, fish meal and crab meal. The nutrients contained in the soil will provide everything your plant needs for several weeks. Although it might give young seedlings just a touch of nutrient burn at first, they can be started in Ocean Forest soil and will soon be able to use the nutrients and start growing quickly. Some growers might put a little big of Happy Frog on top of a container of Ocean Forest, just to make it a little more gentle for seedlings the first week or two.

Texture, Drainage & Water Retention

It’s easy to get caught up thinking about what nutrients and amendments are in the soil, and those are important, but perhaps the most important aspect of any soil is actually its texture, ability to drain, and overall water “holding” ability.


How to mix soil for growing weed

The finishing touches for this recipe are needed in much smaller quantities. Once you’ve gathered the above ingredients, you’ve done most of the heavy lifting and now need just a few more items:

Leave the covered trash cans in a sunny location for 30 to 60 days. Continue watering the mixture during this period, always maintaining vital moisture without drenching it. This period of the composting process is called baking because the mixture will become hot to the touch as the sun bakes it. The heat emanating from the mixture breaks down the soil ingredients so the cannabis plants can absorb them. You may opt to add live worms to the mix, which will help aerate the growing medium and keep the soil healthy. Either way, mix everything one last time for good measure.

You may know that organic soil is optimal for growing cannabis , but do you know about the benefits of super soil? This type of potting soil is not only organic but it also infuses your plants with a wealth of nutrients that ordinary soils may not offer.

How to grow weed with super soil

If you don’t have the time to make the soil from scratch, you have several other options. One possibility is to purchase composted soil from a nursery or garden supply store. This premade soil can be a time-saver while still providing many of the same benefits of the DIY version. Of course, premade soil often comes at a premium price, so assess whether you would rather save time or money before deciding which growing medium is right for you.

Those five ingredients form the basis of your soil composting mix, but there are plenty of goodies that you can add to super soil to maximize its potency. Among these beneficial ingredients are bone meal, bat guano, and worm castings. All of these organic materials work with the nutrients already present in super soil to create a powerhouse recipe for cannabis growth. Earthworm castings and fish bone meal are especially powerful ingredients to blend into super soil. Consider mixing in this combination of supplemental ingredients:

How do you make Subcool's super soil?

After the mix is fully blended, transfer a quarter into each of the four garbage cans. Pour in some water to make sure the microbial process gets underway, keeping everything moist but not soggy. At this stage, it is important to put lids on the trash cans so that the mix does not dry out. If the mix does dry out, the composting process will halt as the all-important microbial activity ceases. Lids are also important to keep out insects, which will be drawn to such a fertile environment and could contaminate it.

Here you’ll learn exactly what makes soil super and why you should consider using it as a cannabis cultivator. You’ll also learn step-by-step exactly how to grow weed with super soil.