Cannabis Oil : The primary substance in a weed cart is cannabis oil, which is extracted from the marijuana plant. This oil is wealthy in cannabinoids like THC (tetrahydrocannabinol, the psychoactive compound) and CBD ( cannabidiol , a non-psychoactive compound), in addition to terpenes and different pure plant compounds. Additives : Some carts may embrace thinning brokers like propylene glycol (PG) or vegetable glycerin (VG) to improve the viscosity of the oil for vaporization. Types of Cannabis Oil in Carts :