Kinda. It IS possible to grow cannabis in regular garden soil, but as you might expect, it probably won’t provide the optimal conditions for cannabis plants to thrive.
Cannabis plants prefer a light, well-draining soil that is rich in organic matter and has a specific balance of nutrients and pH levels. Regular garden soil may not have the right balance of nutrients and pH levels for cannabis plants, and it may also contain pests or diseases that could harm your plants. And if it has been treated with chemical fertilizers or pesticides, these can be harmful to your plants.
Additionally, garden soil is often heavier and more compact than the soil that is ideal for cannabis plants, which can lead to poor drainage and root rot, especially if it’s a heavy clay-based soil. For these reasons, it is generally recommended to use a soil mix specifically designed for cannabis plants
You can also make your own soil mix by combining equal parts of perlite, vermiculite, and peat moss, and adding some compost or worm castings to provide additional nutrients.