Pioneers of the CBD industry, 4 Corners Cannabis helped pave the way for companies that want to provide quality products and utilize best practices. They grow their own strain of hemp and make small batches of true full-spectrum CBD products. Their prices place them lower down on our ranking, but their highly satisfied customers are more than willing to pay for the 4 Corners quality.  
In 1970, the U.S. government passed the Controlled Substances Act, a statute that regulates all cannabis, including industrial hemp. However, the definition of marijuana was lifted from the existing 1937 statute and adopted without any change. This definition excluded certain parts of hemp — sterilized hemp seed, hemp fiber, and hemp seed oil — from regulation.
“All parts of the plant Cannabis sativa L., whether growing or not; the seeds thereof; the resin extracted from any part of such plant; and every compound manufacture, salt, derivative, mixture, or preparation of such plant, its seeds or resins; but shall not include the mature stalks of such plant fiber produced from such stalks oil or cake made from the seeds of such plant, any other compound, manufacture, salt, derivative, mixture, or preparation of such mature stalks (except the resin extracted therefrom),fiber, oil or cake, or the sterilized seed of such plant which is incapable of germination.”
Extraction: The method by which CBD oil is processed from hemp plants can be very telling. Some manufacturers extract and process the oil using toxic materials like propane or butane; in most cases, these oils are cheaply priced. Safer extraction and processing agents include ethanol, which cleans the hemp plant of unwanted toxins; and supercritical carbon dioxide extraction, which strips harmful materials from the plant by changing the carbon dioxide’s temperature and pressure settings.
The CBD industry is still extremely new. The terminology hasn’t been officially sorted out yet, so each company kind of comes up with their own method of categorizing their products. As always, make sure that you do your own research before you buy anything. If you’re unsure, email the company’s customer service before you buy. Most CBD companies have good customer service teams and they’ll be happy to help.
CBD Oil can also contain ZERO amount of THC. If this were coffee, it’s all in the grind. It still is, figuratively, for hemp CBD oil. We developed a product from listening to our customers that needed 100% certainty their oil didn’t contain trace amounts of THC. Like who? First responders, athletes, military personnel, or anyone that wants 100% confidence they’re consuming only CBD. Read more about it here.
So. According to the Controlled Substance Act definition itself, certain parts of the cannabis plant are clearly illegal, while others fall into a grayer area. One of these – for the most part – is CBD extracted from the “legal” parts of the cannabis plant, and non-marijuana industrial hemp plants, which, as defined by Section 7606 of the Farm Bill are cannabis plants with less than 0.3 percent THC.
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