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What Is Hemp?

NIDA. “What Is Hemp?.” National Institute on Drug Abuse, 4 Nov. 2015,

NIDA. What Is Hemp?. National Institute on Drug Abuse website. November 4, 2015.

Maybe you’ve heard that marijuana is similar (or identical) to something called hemp. If you’ve seen hemp necklaces or hemp shampoo on store shelves, or heard that Thomas Jefferson, the third president of the United States, grew hemp, you may have wondered: Wait a minute, you mean I can wash my hair with liquid marijuana? Our third president grew weed?

The answer is more complicated than you might think.

Here are some facts on hemp and its relation to marijuana:

What exactly is hemp?

“Hemp” is another name for the Cannabis sativa plant and its products. This same species of plant is also called marijuana.

Is hemp the same thing as marijuana?

Yes and no. Hemp and marijuana are both names for the Cannabis sativa plant, but people usually use these terms to talk about two different varieties of the plant.

Varieties grown to make hemp rope and other products you see on the shelves (including the varieties Jefferson and others grew during the 1700s) have a whole lot less of the chemical that makes marijuana users feel high. Those varieties are sometimes called “industrial hemp.”

Varieties grown for use as a drug have been specifically bred to have lots of THC, or delta-9-tetrahydrocannabinol, which is the chemical that makes users feel high.

What is industrial hemp used for?

The stalks of industrial hemp—remember, that’s the kind with low levels of THC—can be made into rope, paper, wax, and cloth for furniture or clothes. Sterilized hemp seeds can be made into oil for shampoo, soap, or body lotion. The seeds can also be mixed in with food for animals.

Is hemp illegal?

Cannabis sativa is usually illegal under U.S. federal law, but there are exceptions to that rule for products made from hemp that do not contain THC, like paper and shampoo. The U.S. imports some industrial hemp products, and some states also allow farmers to grow industrial hemp.

What’s the short answer?

Hemp rope and joints of marijuana come from different varieties of the same plant. The hemp that’s made into rope or jewelry won’t make a person high.

Hemp 101: A Beginner’s Guide to an Emerging Crop

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Estoy de Acuerdo / I agree

Industrial hemp has been a hot topic in the news lately and rightly so. I will attempt to address some of the questions that I have been receiving regarding hemp production in this article to give folks a practical knowledge about this unfamiliar crop they may be seeing grown around the county. This is in no way an exhaustive look at industrial hemp production or the legislation behind it, but rather think of this as an introductory Hemp 101 course.

Hemp growing in Broadway Hemp’s Harnett County field.

Both industrial hemp and marijuana belong to the Cannabaceae family, which also includes hops. Marijuana and industrial hemp are varieties of cannabis that were developed by selective breeding for different traits. Marijuana is bred for its mind-altering psychoactive compounds; industrial hemp for its CBD oil and many other commercial properties. Marijuana that is smoked for the high usually contains at least 10% THC (tetrahydrocannabinol) or more. By law, industrial hemp must contain 0.3% THC or less. Therefore, THC in industrial hemp is almost non-existent and will not cause an individual to achieve a “high.”

Cannabinoids are a group of chemical compounds found in cannabis that interact with certain receptors in the brain. There are at least 113 classes of cannabinoids that have been identified; these include but are not limited to THC, cannabinol (CBN) and cannabidiol (CBD). Cannabinoids are mainly produced in the trichome glands in the flowers of the female cannabis plant. The presence of male plants during reproductive growth can cause female plants to produce seed and drastically decrease CBD oil production.

Many people ask me if they can grow hemp. The short answer is no. You must be licensed through the North Carolina Department of Agriculture & Consumer Services N.C. Industrial Hemp Research Pilot Program. It requires a copy of a Schedule F from your tax return, providing proof of agricultural income receipts. Basically, you must be a bona fide farmer that makes a significant part of your income through production agriculture to become certified to grow industrial hemp. You must also provide GPS coordinates of where your hemp is grown and stored. Any hemp found in an undisclosed area, as well as having THC content greater than 0.3% may result in seizure and destruction of your crop by NCDA&CS and/or law enforcement. All requirements can be found on the NCDA&CS website.

Once a farmer has obtained a license, he or she must obtain plants or seed to plant in the field. At this time, the most common method of planting is from clones, or cuttings from “mother” plants in the greenhouse. Significant work is being done in our region to make planting from seed a more viable option.

Hemp is a very costly crop to grow with labor being one of the most significant costs. There are no synthetic pesticides currently labeled for use on hemp, thus making weed, insect and disease control very labor intensive. A great deal of time and labor is also spent identifying male plants in greenhouses and fields. As mentioned above, the presence of male plants will drastically reduce CBD oil production in female plants.

Hemp harvest labor is also very costly. Historically, hemp has been harvested by hand and hung in a barn to air dry. This is a slow and inefficient process. Many farmers are taking a more mechanized approach, using modified tobacco strippers and tobacco bulk barns for more efficient harvest and drying. Once dried, the hemp is delivered to a processing facility.

I would like to stress that ingesting industrial hemp will not cause a high as these plants are used for the specific purpose of CBD oil production and sometimes fiber, and are different than the plant strains that contain a high THC content. Do not attempt to sample or remove hemp that you may see growing in a greenhouse or field. This can be considered trespassing or theft and could be grounds for legal action by the farmer or landowner against any violator. For further information regarding industrial hemp or any other agriculture-related questions, please contact me at my office.

Mitchell Williams is Agriculture Agent – Field Crops and Livestock for North Carolina Cooperative Extension in Lee County.

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Mitch Williams Extension Agent, Agriculture – Field Crops, Livestock, Pesticide Coordinator Call Mitch