Executive Summary

The history of hemp in the United States reflects a series of distinct legal and economic phases rather than a single continuous policy.Hemp began as an agricultural fiber crop in the colonial period, expanded during early industrial development, declined in the late 1800s, and became subject to federal regulation under the Marihuana Tax Act of 1937. During World War II, hemp production temporarily increased under federal promotion. The Controlled Substances Act of 1970 later classified cannabis broadly, placing hemp under the same regulatory framework. Limited reintroduction occurred through research programs authorized by the 2014 Farm Bill, followed by full federal legalization of hemp as an agricultural commodity under the 2018 Farm Bill. Today, hemp operates under a structured regulatory system involving federal and state oversight.

Colonial and Early American Hemp

Hemp was cultivated in early American colonies primarily as a fiber crop used for rope, sailcloth, and textiles. Its value was tied to maritime and agricultural needs rather than chemical or medicinal uses.

In regions such as Virginia during the early 1600s, hemp production was encouraged as part of broader agricultural development. References from this period indicate that colonial authorities promoted hemp cultivation due to its economic utility, particularly for naval supplies.

Hemp functioned as a practical raw material within a developing agrarian economy and was integrated into early domestic production systems.

1800s Expansion and Decline

During the 19th century, hemp production expanded alongside industrial growth, particularly in regions suited for large-scale agriculture. Demand for durable natural fibers supported its role in rope-making, textiles, and other industrial applications.

However, hemp production declined toward the late 1800s due to multiple converging factors:

• Increased cotton production in the southern United States
• Growth of imported fibers such as jute
• Industrial changes reducing reliance on traditional rope and sail materials

This decline was gradual and driven by economic competition and shifting industrial needs rather than a single legal change.

What the 1937 Marihuana Tax Act Actually Did

The Marihuana Tax Act of 1937 imposed a federal tax and registration framework on cannabis-related activities, including hemp.

Key elements of the law included:

• Mandatory registration with federal authorities
• Tax requirements on the transfer and production of cannabis
• A broad statutory definition of “marihuana” that encompassed multiple parts of the cannabis plant

While hemp was not explicitly prohibited, the regulatory burden created by the tax and compliance requirements significantly restricted its commercial production. The law effectively altered the economic viability of hemp farming by introducing administrative and financial barriers.For a deeper explanation, see why hemp was made illegal in 1937.

World War II and the “Hemp for Victory” Program

During World War II, the federal government promoted hemp production through the “Hemp for Victory” program.

This initiative included:

• Encouragement of domestic hemp cultivation
• Temporary easing of regulatory constraints
• Increased production to support wartime supply needs, particularly for rope and military materials

The expansion of hemp during this period was directly tied to wartime necessity. After the war ended, production declined again, and the prior regulatory framework resumed.

Hemp Under the Controlled Substances Act (1970)

The Controlled Substances Act (CSA) of 1970 established a federal system for regulating drugs and controlled substances. This period is a key part of the history of hemp in the United States, particularly as federal regulation began to take shape.

Under the CSA:

• Cannabis was classified as a Schedule I substance
• Hemp was included within the broader legal definition of cannabis
• Certain parts of the plant—such as mature stalks, fiber, and sterilized seeds—were excluded

Despite these exemptions, cultivation of hemp remained under federal control, with the Drug Enforcement Administration (DEA) overseeing licensing and enforcement. This framework limited large-scale legal hemp production in the United States for decades. This classification is further explained in our breakdown of cannabis policy and law in the United States.

The Return of Hemp: 2014 Farm Bill

The Agricultural Act of 2014 (2014 Farm Bill) introduced a limited reintroduction of hemp through research-focused provisions.

Key features included:

• Authorization of hemp cultivation for research purposes
• State-run pilot programs through departments of agriculture and universities
• Continued classification of hemp within the broader cannabis framework

This phase did not represent full legalization. Instead, it functioned as a controlled transition period allowing states to explore hemp production under federal oversight.

The Legal Reset: 2018 Farm Bill

The Agriculture Improvement Act of 2018 (2018 Farm Bill) established a new federal legal framework for hemp.

Key changes included:

• Definition of hemp as cannabis containing no more than 0.3% THC on a dry weight basis
• Removal of hemp from the Controlled Substances Act
• Recognition of hemp as an agricultural commodity rather than a controlled substance

This legislation marked a structural shift in federal policy, separating hemp from marijuana under the law and allowing for commercial cultivation under regulated conditions.

How Hemp Is Regulated Today (USDA Framework)

Following the 2018 Farm Bill, hemp is regulated through a combination of federal and state systems under the oversight of the U.S. Department of Agriculture (USDA).

Current regulatory elements include:

• Licensing requirements for growers
• Mandatory THC testing to confirm compliance with the 0.3% threshold
• Crop disposal rules for non-compliant plants
• State and tribal regulatory plans approved by the USDA

As of March 2026, hemp operates within a formal agricultural regulatory structure, with compliance requirements similar to other regulated crops but with additional controls related to THC content. Overall, the history of hemp in the United States reflects shifting economic, legal, and regulatory priorities over time.

Hemp vs Marijuana: What the Law Actually Says

Under current U.S. law, hemp and marijuana are legally distinguished based on THC concentration.

Key distinctions include:

• Hemp: Cannabis containing ≤0.3% THC (dry weight)
• Marijuana: Cannabis containing more than 0.3% THC

Both are derived from the same plant species, but their legal classification differs based on this threshold. This distinction determines regulatory treatment, cultivation legality, and federal oversight.

Timeline Summary: What Changed in Each Era

• Colonial Period (1600s–1700s)Hemp cultivated as a fiber crop for rope and textiles→ Established as an agricultural commodity
• 1800sExpansion followed by decline due to competing fibers and industrial changes→ Economic shift reduced demand
• 1937 Marihuana Tax ActImposed a federal tax and registration framework→ Increased regulatory burden on hemp production
• World War II (1940s)Temporary government promotion through “Hemp for Victory”→ Short-term increase in production
• Controlled Substances Act (1970)Cannabis classified as Schedule I; hemp included→ Federal control over cultivation
• 2014 Farm BillAuthorized research and pilot programs→ Limited reintroduction of hemp
• 2018 Farm BillDefined hemp and removed it from the CSA→ Federal legalization as an agricultural commodity
• Post-2018 Framework (Current System)USDA-regulated production with state participation→ Structured legal and regulatory system

Pros and Cons

Pros

• Clear legal evolution across distinct regulatory phases
• Established federal and state regulatory framework
• Defined legal distinction between hemp and marijuana

Cons

• Historical confusion in public narratives
• Regulatory complexity across jurisdictions
• Ongoing adjustments within the modern framework

Conclusion

The history of hemp in the United States reflects a progression from early agricultural use to complex federal regulation and eventual reclassification as a legal crop. Rather than a single policy shift, hemp’s legal status has evolved through multiple legislative stages, culminating in its current position as a regulated agricultural commodity under federal and state oversight.

Version: v1.1

Based on verified statutory and regulatory sources current as of March 2026.

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Why Was Hemp Made Illegal in 1937? What the Law Actually Says

Hemp was not banned because of what it is — it was restricted because of how it was classified.

Throughout the 20th century, U.S. drug policy failed to distinguish between hemp and marijuana. As a result, a non-psychoactive agricultural crop became tied to broader cannabis prohibition.

This article explains what laws affected hemp, why those decisions were made, and how those policies shaped decades of restriction.

What Law Made Hemp Illegal?

The primary law that restricted hemp in the United States was the Marihuana Tax Act of 1937. While it did not directly ban hemp, it imposed strict regulations and taxes that made legal production extremely difficult.

Later, the Controlled Substances Act of 1970 classified cannabis as a Schedule I substance. Because hemp and marijuana were not legally separated at the time, hemp remained restricted under federal law.

Why Was Hemp Made Illegal?

Hemp was not targeted independently. Instead, it became restricted due to its association with marijuana.

At the time, federal policy did not distinguish between low-THC hemp and high-THC cannabis. Public perception, political priorities, and regulatory simplicity all contributed to hemp being included in broader drug enforcement policies.

Hemp vs. Marijuana: What’s the Difference?

Hemp and marijuana both come from the cannabis plant, but they are legally and chemically different.

• Hemp contains less than 0.3% THC and does not produce psychoactive effects
• Marijuana contains higher levels of THC and is regulated differently

The lack of this distinction in early laws led to hemp being restricted alongside marijuana.

The Commission That Reviewed Cannabis Policy

In 1970, the U.S. government established the Shafer Commission to evaluate cannabis policy.

After conducting national hearings and scientific review, the commission released its report, Marijuana: A Signal of Misunderstanding (1972), recommending decriminalization of personal use.

“The criminal law is too harsh a tool to apply to personal possession…”

— Shafer Commission, 1972

Despite these findings, federal policy remained unchanged.

The War on Drugs and Policy Expansion

During the 1980s, federal drug enforcement expanded significantly.

Policies included:

• Mandatory minimum sentencing laws
• National anti-drug campaigns
• Increased enforcement funding

Cannabis remained classified as a controlled substance, and hemp continued to be restricted due to its legal association.

The Impact on Hemp

As a result of these policies:

• Hemp production declined in the United States
• Research and cultivation were limited
• Public understanding of hemp remained unclear

Despite its industrial uses, hemp was effectively removed from U.S. agriculture for decades.

What Changed After the 2018 Farm Bill?

The 2018 Farm Bill created a legal distinction between hemp and marijuana.

Hemp was defined as cannabis containing less than 0.3% THC and was removed from the Controlled Substances Act.

This allowed:

• Legal cultivation of hemp
• Expansion of hemp-based industries
• Renewed research and agricultural use

However, hemp remains regulated at both federal and state levels.

Conclusion

Hemp was not banned because of its properties, but because it was grouped with marijuana under federal law.

Only in recent years has policy begun to separate the two, allowing hemp to return as a legal agricultural and industrial crop.

Coming Next

In Part 4, we follow the activists. We also look at the researchers and farmers who kept hemp alive. They persevered even when the law said it was dead. While the U.S. clung to outdated policies, the rest of the world moved ahead.

Next: Part 4 – Cracks in the Wall (1990s–2000s)

The post Why Was Hemp Made Illegal: Exposing the Hidden Forces Behind the Ban appeared first on HempJuana.

Want to see it for yourself? Watch Hemp for Victory on YouTube
Or read about South Dakota’s agricultural exhibits here.

? After the Ban: No One Spoke Its Name

The era of anti weed propaganda didn’t just criminalize cannabis—it erased hemp from everyday life. Once the government outlawed it, the plant quietly slipped from public memory. Schools stopped teaching it. As a result,Farmers stopped planting it. And the truth got buried under fear. The government didn’t need a bonfire to erase the plant’s legacy. instead, they just let it rot in silence

Agriculture programs that once included hemp cultivation quietly dropped it from the curriculum. Rural communities that had relied on hemp for textiles, paper, and oil adapted quickly — not by choice, but survival.

No one wanted to be tied to something the government had targeted. Especially as the word “marihuana” was becoming synonymous with crime.

? A Plant Rewritten by Fear

As the decades rolled on, public perception shifted from hemp being useful to hemp being dangerous. The word “hemp” all but disappeared in media. “Meanwhile, ‘Marijuana’ took over…a new, foreign-sounding word that helped rebrand the plant as something menacing.

People who once worked with hemp stopped passing down their knowledge. Families, teachers, and even doctors avoided the topic. As a result, it wasn’t just hemp that was outlawed…it was the truth about hemp.This anti weed propaganda didn’t come from science. It came from fear, power, and industry influence.

? Cold War, Chemicals, and Control

During the Cold War, anti weed propaganda helped erase hemp from agricultural curriculum’s. This campaign For example, that included promoting synthetic materials. Examples include nylon and plastic.

Hemp no longer fit the narrative.After all, it was natural. It was old. It wasn’t owned by a corporation.Chemical farming, Big Ag, and pharmaceutical solutions became the new standard. Hemp, once seen as a patriotic crop, became the forgotten weed.

? Not Just a Drug: Remembering the People Who Used It for Good

In earlier times, cannabis wasn’t scandalous. It sat quietly in medicine cabinets and home remedies.

. It was in medicine cabinets and home remedies.

For example, my great-grandma made her own remedy. She added cannabis to green rubbing alcohol. She always kept it in the pantry. She used it for arthritis and body aches. “Let it bite a little,” she’d say. “That means it’s working.”

She wasn’t a criminal. In truth, she was a healer.

And her story is one of thousands that never made it into textbooks.

Back then, cannabis tinctures were common… in pharmacies before 1942. It was used for pain, inflammation, menstrual cramps, and more and in fact, it was still listed in the U.S. Pharmacopoeia until political pressure wiped it out.

? Study: Transdermal CBD reduces pain in patients with neuropathy (NIH.gov)
? Harvard: CBD and chronic pain

The science was there. The stories were real. In fact, CBD would later prove life-saving for children with severe epilepsy—halting seizures that even the strongest pharmaceuticals couldn’t touch. Parents battled across states for their children’s right to a normal life.. It wasn’t just medicine—it was their last hope.

Nevertheless, the system chose to forget.

? Then vs. Now

Then:

• Families used cannabis topically without fear
• Schools taught how to grow hemp
• Hemp was part of patriotic wartime campaigns

Now:

• Most Americans under 40 grew up never hearing the word “hemp”
• People still argue whether it’s medicine, a drug, or both
• The internet is now rediscovering what elders once knew

The plant didn’t change. The story around it did.

In the 1950s and 60s, forgetting was the goal. Today, remembering is resistance.

Next up: Part 3 — The War on Weed
Nixon’s war didn’t just target drugs. It reshaped lives, laws, and the truth about cannabis.

The post The Great Hemp Cover-Up: Fueled by Anti-Weed Propaganda appeared first on HempJuana.

How the Betrayal of Hemp History Unfolded

The betrayal of hemp history begins with how this trusted crop was turned into an outlawed plant. This change left behind the farmers, doctors, and truths that once supported it.To understand how this betrayal unfolded, we must first understand the broader hemp history that led up to it.

? Ask Yourself These Questions

What do you do for a living? Perhaps you have a career related to the fascinating hemp history.

How does that job support you—month after month?
Does it pay your rent? Feed your kids? Give you purpose?

Now imagine waking up tomorrow and hearing:
“Your job is now illegal.”

No one got hurt.. Not because the system failed.
But because someone in power said it had to go.

The shutdown came fast. No one warned the workers. There was no safety net. With no second chance, it abandoned entire hemp communities.. That’s what they faced. This policy shift marked a turning point in hemp history.

Farmers handed it off to processors. Processors to makers. Makers to markets. Communities built their lives around a plant that once served this country. One generation later, powerful interests erased it..

It didn’t happen by accident. It happened by design.
And that’s what this series will uncover.

? The Setup: Fear, Greed, and a Forgotten Chapter of Hemp History

In 1933, the U.S. ended Prohibition, bringing alcohol back into legal circulation.Politicians framed it as a return to common sense.But behind the scenes, powerful people were searching for a new threat. They found it in cannabis—and lumped hemp in with it.Enter Harry J. Anslinger, the first commissioner of the Federal Bureau of Narcotics. With his department’s funding on the line, he launched a nationwide campaign to paint marijuana—and hemp—as dangerous.

He didn’t rely on science. He relied on fear.

Anslinger’s speeches linked cannabis to insanity, violence, and racial prejudice. He called it a “gateway to destruction” and referred to users as “degenerates.” Jazz musicians, immigrants, and people of color were all targeted in his narrative.

Want more? Watch for our mini-series The Hands That Buried Hemp, starting with the man who led the charge: Anslinger.

Anslinger had help:

• William Randolph Hearst, the newspaper mogul, ran stories blaming marijuana for crimes that never happened. He feared hemp would replace the paper made from his timber empire.
• DuPont had just patented nylon. Hemp threatened their bottom line.
• Andrew Mellon, U.S. Treasury Secretary, was a DuPont investor and also Anslinger’s uncle by marriage.

Together, they passed the Marijuana Tax Act of 1937. It didn’t criminalize hemp directly—instead, it made it nearly impossible to grow, sell, or process without heavy fees and scrutiny. As a result, that was enough to kill the industry. The 1937 Marijuana Tax Act wasn’t just policy—rather, it was a major change in hemp history. This change erased its value from the economy. The memory of its significance also faded.

Want proof? Meet the first person arrested under the Tax Act.

? What They Were Afraid Of

Just as hemp was being pushed out, it was on the brink of a renaissance.

In 1941, Henry Ford built a prototype car using hemp-based plastic panels. It was stronger than steel and designed to run on hemp ethanol instead of gasoline.

Ford wasn’t guessing—he was proving that plants can power the future.

But big oil, big media, and big chemical companies weren’t interested in innovation they couldn’t control.

Powerful interests shelved Ford’s vision — and soon after, hemp

? Beliefs That Didn’t Age Well

In the 1930s, the next were considered normal:

• Blaming entire races for social problems
• Printing false crime stories to stir public fear
• Ignoring science in favor of headlines
• Letting personal profits shape national policy

The term ‘drug policy’ masked what it really was: power politics fueled by fear.

The language and logic that buried hemp wouldn’t pass today—but their effects are still with us.
It’s time we uncover what was hidden, and remember what was erased.

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