ENERGROW NEWS : What is the difference between Hemp Oil and CBD Oil? What is hemp oil? Hemp oil, if more accurately called Hemp seed oil, is obtained from the extraction of hemp seeds. The hemp plant contains very little THC. In nature, hemp contains less than 0.3% THC, which is legal. while marijuana contains 12 - 20% THC. Hemp seed oil, although it does not contain any cannabinoids, contains many important nutrients. until being classified in a group