Just because cannabis is sometimes called weed doesn’t mean it won’t benefit from the right soil. Yes, cannabis will grow in many conditions. But to get the most potent bud and the biggest crops, you want to give your crop the right amount of water, the best soil for cannabis and the best cannabis nutrients for soil conditions. Whether you are growing a bit of bud for your personal consumption or run a commercial grow operation, your plants will more than repay your thoughtfulness and the investment of time and money you put into creating the right kind of soil.
Choosing Soil for Your Cannabis Crop
What’s the best soil for growing cannabis? There are four main types of soil: loam, clay, sand and silt. Many soils combine two or more of these types.
Sandy soil is easy to work with and drains easily. That means it doesn’t flood but usually needs more watering. It also tends to lack nutrients.
Silty soils have natural minerals that nourish plants. This kind of soil tends to retain water well. But it is prone to ground compaction, which can retard plant growth.
Clay soils are loaded with minerals but tend to clump and can be difficult to work with. Clay also drains very poorly. That can produce problems with overwatering or during heavy rains.
Although all these soils can grow good pot plants, loamy soils offer gardeners and farmers the best of all possible worlds. Loams are a mixture of sand, silt and clay. As such, they can give your pot plants the best characteristics of each of these soils.
If you’re wondering how to tell these soil types apart, try picking up a piece and squeezing it in your hand. Clay will squeeze into a tight ball, while sandy soil will be hard to compact. Loam will become a loose ball before falling apart in big chunks.