- Sea-going fish emulsion
- Crab meal
- Shrimp meal
- Composted forest humus
- Sphagnum peat moss
- Worm castings
- Oyster shell
- Sandy loam
- Bat guano
- Granite dust
- Norwegian kelp
If you must buy a bagged soil and your local garden store doesn’t have a lot of choices, anything with the words “organic potting soil” or “organic potting mix” will work. It’s not the ideal, but it will do in a pinch.
For years, Black Gold was the go-to potting soil for the discerning cannasseur. Black Gold also makes other additives such as peat moss, earthworm castings, perlite, compost, and vermiculite you can use to supplement the lack of necessary cannabis nutrients.
To make your own organic super soil, you need to be able to control things like temperature, airflow, and carbon-to-nitrogen ratio. Check out Honest Marijuana’s How To Grow Marijuana: The Ultimate Organic Guide for advice on these variables. Once you’ve got all that straight, here’s a step-by-step guide to making your own soil.
If you absolutely must grow your cannabis outside in the ground, we suggest digging a three-foot-wide, three-foot-deep hole and filling it with the organic super soil we show you how to make below. This will give your cannabis plant the proper drainage, water retention, and amount of nutrients to help it grow tall and strong.
- 3 parts compost
- 3 parts peat moss
- 2 parts wet perlite
- 1 part wet vermiculite
For example, liquid drain cleaner and bleach (14 and 13.5 respectively ) are both very basic. Battery acid and hydrochloric acid (both 0 pH) are both very acidic. Between those two extremes lie more common items, like:
The organic super soil, in particular, gives you the right balance of carbon, nitrogen, phosphorus, and a whole host of other nutrients to ensure that your cannabis plant gets exactly what it needs during every stage of growth . Add to that the 420 fertilizer (you can make yourself) and you’ve got a great recipe for growing tall plants with plenty of buds and lots of cannabinoids.
The one consolation is that these testers aren’t very expensive. You can pick up a perfectly good soil pH tester for around ten bucks at Walmart or Amazon.
Thinking about growing your own cannabis? Not sure what soil to use? The experts at Honest Marijuana tell you everything you need to know to grow the best plants.
Furthermore, cannabis-specific soil mixes provide a more natural form of growth, as compared to the hyper-accelerated growth of hydroponics or aeroponics.
Air pockets within your soil mix not only provide oxygen for the roots, but they also allow the root system to expand rapidly.
In other words, beneficial microbes facilitate enhanced nutrient absorption, promote root growth, and provides a protective barrier against harmful bacteria and fungi.
If you choose a stand-alone potting soil product, then it might not be suitable for seedlings due to the overall strength. If you decide to go with a milder soil mix, then you’ll need to purchase additional nutrients.
When it comes to the best cannabis nutrients for soil, Big Roots falls short. Although the product claims to be built by growers for growers, this potting mix doesn’t appear to stand out.
Fox Farm didn’t overdo the nutrient content for a very specific reason, which was not to burn your plants. Many other soil brands create “hot” soil mixes by placing an overly-high nutrient content, but this is not the case with Fox Farm’s Happy Frog Potting Mix.
If you’re looking for the best soil mix for cannabis, you’ll likely find it elsewhere.
Furthermore, the Organic Super Soil Concentrated Strength has a strong odor, which is a significant downside if you must be discreet.
This is why we’ve compiled this buyer’s guide to help you find the best potting soil mix for cannabis plants.
CLICK HERE >>> to read our fantastic 2020 Round-up Review & Guide of the Top 5 Best Soil for Cannabis | The Highest Crop