CROP ROTATION – THE LIFECYCLE OF A HEMP PLANT
Hemp plants also take metals and other toxins out of the ground after industrial farming. Acting like nature’s vacuum cleaner, it stops these harmful byproducts from reaching groundwater. Not only that, but the biomass left behind by a hemp crop has multiple uses itself. The crop itself can be used for biofuel and materials such as rope or fabric, or alternatively, it can be returned to the ground to restore nutrients in the soil.
https://www.goodrays.com/blogs/journal/crop-rotation-the-lifecycle-of-a-hemp-plant