What is the difference between marijuana and hemp?

Marijuana and hemp refer to the same plant: cannabis. There is no scientific difference between the two. The law, however, distinguishes between them by the tetrahydrocannabinol (THC) content.

Scientific Differences

In most jurisdictions, including the United States, “hemp” refers to cannabis with 0.3 percent or less THC content by dry weight. Because the THC level in hemp is so low, it is unlikely to produce a high sensation.

Legal Definitions

Marijuana refers to cannabis that has more than 0.3 percent THC by dry weight.