There are two main sources of CBD: hemp plants and marijuana. Where a given product comes from depends on the legal status of marijuana in a particular state.
If medical marijuana is illegal in a given state, THC levels determine whether a CBD product is illicit or not. In most places, the limit is extremely low. We’re talking under 1 percent THC, with some states opting for a cap as low as 0.3 percent. In this case, the only source that would work is hemp, and CBD products will, therefore, be hemp-derived.
In other places, limits can be higher. Delaware, for example, allows CBD oil to contain up to 5 percent THC. But that’s still not enough to get anyone very high. Sourcing and legality questions aside, the general consensus has it that CBD derived from marijuana is both more potent and more effective. Many attribute this phenomenon to the “entourage effect,” or the theory that one cannabinoid can do its job better when it works together with its companion cannabinoids. Extracting Cannabidiol from cannabis flowers helps keep these other cannabinoids intact, which is why people prefer it over hemp-derived products.
In other words, the source matters. And the buds of the cannabis plant have a richer and wider complement of cannabinoids compared to hemp leaves. So while we’re on the topic, here’s a quick rundown of the best CBD-only and CBD-dominant strains of cannabis out there.