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what type of soil for cannabis seeds

One factor to consider when choosing the right soil for your weed is whether you’re growing photoperiod or autoflowering plants. Autoflowers prefer a light mix with fewer added nutrients. A great substrate for your autoflowering ladies is a 50:50 mix of coco coir and a light, peat-based soil with some added perlite for drainage.

Loamy soil is a combination of sand, silt, and clay soils with added organic compounds. It is one of the best soil types for growing cannabis as it offers optimal water retention and drainage, and it’s rich in nutrients and oxygen. Downside: This type of soil can be expensive.

Growers can also add clay pebbles to the top of containers and beds to serve as a mulch. Here, they help to trap moisture in the growing medium by preventing excess evaporation. Clay pebble mulch also casts shade over the top layer of soil, suppressing weeds and keeping beneficial microbes sheltered from the hot rays of the sun.

PHOTOPERIOD VS AUTOFLOWERING

For photoperiod plants, start them out in small seedling pots/cups with soil that has little to no nutrients. Replant after a few weeks. More mature plants will tolerate higher nutrient levels much better than seedlings.

The above is a basic soil recipe that will serve you well for most grows, indoors and outdoors. But you can further enhance your soil mix by adding organic fertilisers.

Aside from these factors, there are some common traits among all cannabis soils. Let’s take a look at them:

If you’re growing without additional nutrients, your soil needs to contain organic substances such as humus, compost, worm castings, guano, etc. Microorganisms in the soil will turn these substances into nutrients for your plants to access on demand.

The cardinal rule is never compact the soil. Cannabis roots not only thrive from the nutrients within the soil mix, but also from the air pockets.

The fantastic ingredients included in this soil allow the cannabis grower to start their chosen nutrient regimen much sooner than your other traditional potting media.

Although Organic Super Soil Concentrated Strength is a premier potting mix for cannabis plants, it’s not recommended if you grow more than a handful of plants at once.

Our Pick

IndiCanja bills their soil as developed by growers, for growers as well as being ideal for beginners or pro’s, an all-in-one soil perfect for every stage of growth.

Furthermore, consistent air pockets within the potting mix enhance drainage, which will reduce the possibility of fungus and bacterial rot.

Their ingredient list, lists pre-washed coco-coir, peat moss, and compost as their base materials. Coco-coir and peat moss are both inert substances, which also lead to pH swings within the soil. If the only food source is compost, then it’s likely that you’ll need to supplement your cannabis plants during the flowering phase.

If you’re looking for the best soil mix for cannabis, you’ll likely find it elsewhere.