Hemp V.S Marijuana
When you hear "hemp" or "marijuana," many people think they are entirely different plants. I've even heard someone say it's the difference between male and female cannabis plants. The only thing that person got right is that, whether you're talking about hemp, weed, marijuana, or even grass, they all belong to the cannabis genus.
Carl Linnaeus


When discussing hemp, marijuana, or cannabis, they all belong to the same family: the Cannabaceae family, which also includes close relatives such as hops. The genus comes after the family in Linnaeus's classification. The Cannabis genus encompasses all cannabis species, including Cannabis sativa, Cannabis indica, and Cannabis ruderalis. The genus classification specifically names Cannabis alone, without other close relatives. Cannabis species are then identified based on their physical and chemical attributes.
For instance, Cannabis sativa is a tall plant with narrow leaves and a longer flowering cycle, producing buds with a more energetic, uplifting effect. In contrast, Cannabis indica is shorter with broader leaves and a shorter flowering cycle, and its buds generally have a more sedative, calming effect. Less well-known, Cannabis ruderalis is typically the smallest of the cannabis species, with a short flowering cycle and a rugged disposition. Although it is low in sought-after cannabinoids, it is valued for breeding due to its autoflowering ability and resilience to various environmental conditions.

Why do use different names if it's the same plant?


Marijuana is the term commonly used to describe cannabis plants with high levels of THC, found in the species Cannabis sativa and Cannabis indica. Hemp refers to plants with low levels of THC, found in certain strains of Cannabis sativa. To the naked eye, looking at cannabis plants from the Cannabis sativa species, one being hemp and the other marijuana, you would not be able to tell the difference. Only when the plant has been tested for THC levels can you distinguish between them. If the plant has a Delta-9 THC level of 0.3% or less, it is classified as hemp and is federally legal. If the plant tests for 0.3% THC or higher, it is considered marijuana and is subject to state legislation where it is being cultivated. This leads to courtroom chaos around the legality of hemp, given the difficulty of distinguishing between the two plants by observation alone.
Law enforcement agencies are adapting to the legislation passed in the 2018 Farm Bill. They are increasing training and education to better understand the differences between the plants, partnering with agricultural departments to verify farms, and using field test kits to measure THC content. More invasive testing and investigation follow these processes to help keep illegal substances out of the hands of Americans and to prevent false drug possession charges for law-abiding cannabis consumers.


