Once the Cannabis plant is harvested, it goes through a process to extract CBD from the leaves, roots, and buds. Our CBD providers use a CO2 extraction method that uses pressurized carbon dioxide to pull out the desired compounds from the plant. Full spectrum extract CBD, also referred to as crude, is what you get the first time you extract. Although the concentration of CBD is usually the lowest in full spectrum extract form (around 65%), the amounts of other compounds and terpenes are higher.