Manufacturing Delta 8 THC isn’t easy. There usually isn’t enough growing in any given cannabis plant, which means that removing enough to produce a potent product that will provide a noticeable effect to the user is extremely difficult. Still, it is possible, despite plants only containing less than 1% Delta-8 THC naturally. There are several methods to manufacturing Delta-8 THC. To manufacture Delta 8 THC, you are first going to need a hemp flower.