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The 2018 Farm Bill and Hemp: A Complete Guide to What It Did and What's Happened Since
- Romas Marcin
- Apr 30
- 11 min read
Quick takeaway: The 2018 Farm Bill (officially the Agriculture Improvement Act of 2018) was signed into law on December 20, 2018. It federally legalized hemp by defining it as cannabis containing 0.3% THC or less by dry weight and removing hemp from the Controlled Substances Act. This created the legal framework for the modern hemp and CBD industry. In the seven years since, the regulatory landscape has continued to evolve — with USDA finalizing hemp production rules, FDA still working through CBD-specific regulations, state laws diverging significantly from federal, and the bill itself operating under multiple short-term extensions as Congress debates reauthorization.
For an industry built largely on a single piece of federal legislation, understanding the 2018 Farm Bill is foundational. This guide covers what the bill actually did, what's happened in the years since, the current state of hemp regulation, and what it all means for CBD consumers and businesses.
The Short Version
The 2018 Farm Bill did four things that fundamentally changed the hemp industry:
Defined hemp as cannabis with 0.3% THC or less by dry weight
Removed hemp from the Controlled Substances Act (where it had been classified alongside marijuana)
Gave USDA oversight of hemp production through a federal-state framework
Made hemp eligible for federal agricultural programs (crop insurance, USDA grants, banking)
Everything else — the rise of CBD as a major consumer category, the Delta-8 THC controversy, state-level regulatory complexity — flowed from these four foundational changes.
What the Hemp Industry Looked Like Before 2018
To understand what the Farm Bill changed, it helps to understand what came before.
Pre-1937: Hemp was a normal agricultural commodity in the United States, grown for fiber, food, paper, and other uses for centuries.
1937–2014: The Marihuana Tax Act of 1937 and subsequent legislation (notably the Controlled Substances Act of 1970) effectively prohibited hemp cultivation by classifying all cannabis — including low-THC hemp — alongside marijuana as a Schedule I controlled substance. Industrial hemp essentially disappeared as a U.S. crop.
2014: The 2014 Farm Bill created pilot hemp programs that allowed limited cultivation under state agricultural agencies for research purposes. This was the first crack in decades of prohibition. By 2018, over 3,500 farmers participated in pilot programs across multiple states.
2018: The Agriculture Improvement Act fully legalized hemp production at the federal level.
This historical context matters because the post-2018 hemp industry didn't emerge from nothing — it built on decades of agricultural and legal groundwork.
Key Provisions of the 2018 Farm Bill (Hemp Section)
The hemp-specific provisions of the 2018 Farm Bill take up only about 8 pages of an over-800-page bill, but they fundamentally changed the regulatory landscape:
1. Hemp Definition
The bill defines hemp as:
"The plant Cannabis sativa L. and any part of that plant, including the seeds thereof and all derivatives, extracts, cannabinoids, isomers, acids, salts, and salts of isomers, whether growing or not, with a delta-9 tetrahydrocannabinol concentration of not more than 0.3 percent on a dry weight basis."
The critical details:
The plant — entire plant covered, not just stalks and seeds
All parts — including flowers, leaves, and extracts
All derivatives — extracts and processed forms
0.3% delta-9 THC — the legal threshold
Dry weight basis — how THC content is measured
This expansive definition is what made the modern CBD industry possible. CBD and other hemp-derived cannabinoids became legal as long as the source plant met the THC threshold.
2. Removal from Controlled Substances Act
Hemp was specifically removed from Schedule I of the Controlled Substances Act. This is what changed hemp's federal legal status from "controlled substance" to "agricultural commodity."
3. USDA Oversight
The bill placed federal regulatory oversight of hemp production with the U.S. Department of Agriculture (USDA) rather than the DEA. USDA developed the Domestic Hemp Production Program — federal rules that states can either follow directly or use as a template for their own state-level programs.
4. Federal Agricultural Program Eligibility
Hemp farmers became eligible for:
Crop insurance through the Risk Management Agency
USDA loans and grants
Conservation programs
Other federal agricultural support previously unavailable to hemp
This treated hemp as a legitimate agricultural commodity for the first time in over 80 years.
What the 2018 Farm Bill Did NOT Do
Some common misconceptions about what the Farm Bill accomplished:
❌ It did NOT legalize marijuana
The Farm Bill legalized hemp specifically — cannabis containing 0.3% THC or less. Cannabis above that threshold (marijuana) remains federally controlled. State-level marijuana legalization is a separate regulatory pathway.
❌ It did NOT make CBD FDA-approved
The Farm Bill legalized hemp as an agricultural commodity. It did NOT establish FDA-approved status for CBD as a dietary supplement, food additive, or pharmaceutical. The only FDA-approved CBD product remains Epidiolex (a prescription drug for specific seizure disorders).
❌ It did NOT override state laws
States retain authority to regulate hemp within their borders, including outright prohibition if they choose. Several states had stricter CBD regulations than federal law for years after 2018 — and some still do.
❌ It did NOT immediately solve banking and payment processing
Despite legalization, many banks and payment processors remained cautious about CBD businesses for years after the Farm Bill. Financial services accessibility has improved but remains uneven.
❌ It did NOT end advertising restrictions on major platforms
Major advertising platforms (Facebook, Google, YouTube, etc.) maintained restrictions on CBD advertising even after federal legalization. Some have evolved policies in limited ways, but blanket CBD ad approval remains elusive.
The State-Level Complication
One of the most important and underappreciated aspects of the Farm Bill: federal legalization didn't mean universal legalization across the U.S.
The Farm Bill explicitly allows states to regulate hemp within their borders. States can:
Adopt the federal framework — most have done this
Establish stricter standards — some have done this
Maintain restrictions on CBD specifically — some states had CBD-specific restrictions for years
Approve specific hemp-derived products differently — varies widely
This created the patchwork of state-level CBD regulation that still exists today. A product that's perfectly legal under federal law may face restrictions in specific states. For consumers, the practical implication is: federal legal status doesn't guarantee universal legal status in every state.
What's Happened Since 2018: The 7+ Year Evolution
The 2018 Farm Bill was a starting point, not an endpoint. Several major developments have shaped hemp regulation since then:
USDA Finalized Hemp Production Rules
The USDA finalized the Domestic Hemp Production Program after the 2018 Farm Bill. The regulations cover testing requirements, sampling procedures, disposal of non-compliant plants, licensing, and the federal-state framework. Most states have approved their own hemp programs operating within the USDA framework.
FDA's CBD Position Has Evolved Slowly
The FDA's position on CBD specifically has been the source of significant industry frustration:
FDA has issued multiple statements affirming that CBD does not currently meet the legal requirements to be marketed as a dietary supplement or food additive
FDA has acknowledged the regulatory gap and signaled (multiple times over multiple years) that new pathways for CBD may need to be developed
Specific guidance on CBD claims, marketing, and product standards has been slower to emerge than the industry hoped
FDA has continued to issue warning letters to companies making medical claims about CBD
This regulatory uncertainty has been a defining feature of the post-2018 CBD industry.
The Delta-8 THC Loophole
One of the most consequential post-2018 developments was the emergence of Delta-8 THC as a hemp-derived intoxicating cannabinoid. Because the Farm Bill defined hemp by delta-9 THC content only, Delta-8 THC products derived from hemp existed in a legal gray area that wasn't addressed in the original legislation.
This led to:
A proliferation of Delta-8, Delta-10, THC-O, HHC, and other novel hemp-derived cannabinoids in the marketplace
DEA and FDA both taking positions that have created ongoing legal complexity
State-level responses ranging from explicit prohibition to specific regulation
Pending federal legislation that may address these compounds in future Farm Bill versions
This is one of the biggest unresolved regulatory questions in hemp today.
Payment Processing and Banking
Access to financial services for CBD businesses has gradually improved since 2018, though it remains uneven. More banks now serve CBD merchants, and U.S.-based payment processing has become more accessible. However, many CBD businesses still face higher rates and additional scrutiny compared to other industries.
Advertising and Marketing
Major advertising platforms have largely maintained CBD restrictions despite federal legalization:
Google Ads still significantly restricts CBD advertising
Facebook and Instagram have limited CBD advertising approvals
TikTok restricts CBD content
Amazon does not sell consumable CBD products (though limited topical CBD has been allowed in some markets)
CBD brands have largely built audiences through SEO, organic social media, email marketing, and influencer partnerships rather than traditional paid advertising.
State-Level Expansion and Divergence
State-level CBD policies have continued to evolve in different directions:
Most states have aligned with federal hemp regulations
Some states have built robust state hemp industries with their own regulatory layers
A few states have maintained or added CBD-specific restrictions
Some states have moved separately to legalize marijuana, creating multi-tier cannabis frameworks
The "all 50 states legal" claim about hemp-derived CBD is broadly accurate but has practical complications in specific jurisdictions.
Farm Bill Reauthorization Status
The 2018 Farm Bill was originally scheduled to be reauthorized in 2023. As of recent updates, Congress has not passed a new comprehensive Farm Bill and instead has extended the 2018 version through short-term continuing resolutions while debating the next comprehensive bill.
What this means in practice:
The 2018 hemp framework remains in effect
A new Farm Bill is expected at some point and may include hemp-specific updates
Key debates include Delta-8 THC regulation, THC threshold adjustments, and various industry stakeholder positions
The exact timeline and content of the next Farm Bill remain uncertain
For current status before relying on this guide for time-sensitive decisions, verify with USDA, congress.gov, or industry associations like the U.S. Hemp Roundtable.
What This Means for CBD Consumers
If you're a CBD consumer, the practical implications of the Farm Bill (and what's happened since) are:
Hemp-derived CBD with less than 0.3% THC is federally legal under current law
State law may add additional restrictions — verify your state's specific rules
Product quality varies enormously because FDA hasn't established CBD-specific product standards — third-party lab testing matters more than ever
Major retailers and platforms still have CBD restrictions even with federal legalization
Banking, payments, and shipping generally work but can have occasional friction
The legal landscape may continue to evolve — particularly around Delta-8 and similar compounds
For practical buying guidance, see our How to Read CBD Labels guide and Different Types of CBD guide.
What This Means for CBD Businesses
For businesses operating in the hemp space, the post-2018 reality has been a mix of opportunity and complexity:
The opportunities:
Federal legal status enables interstate commerce
USDA framework provides regulatory predictability for cultivation
Banking access has gradually improved
Mainstream retail acceptance has grown significantly
Insurance and standard business services are increasingly available
The challenges:
FDA's ongoing CBD regulatory gap creates marketing and product development uncertainty
Major advertising platforms remain restrictive
State-level regulation creates compliance complexity for multi-state operators
Delta-8 and similar compounds create regulatory exposure
Industry consolidation has accelerated as smaller operators face compliance costs
GoGreen Hemp has operated through this entire regulatory evolution — from before the Farm Bill's passage through the current post-Farm-Bill landscape. We've prioritized compliance, lab testing transparency, and quality manufacturing as the foundation of a brand that can navigate continued regulatory evolution.
Frequently Asked Questions
What is the 2018 Farm Bill?
The 2018 Farm Bill — officially the Agriculture Improvement Act of 2018 — was signed into law on December 20, 2018. It's the periodic federal agriculture legislation that, in this case, included the historic provision legalizing hemp at the federal level by defining it as cannabis containing 0.3% THC or less.
Did the 2018 Farm Bill legalize CBD?
The Farm Bill legalized hemp as an agricultural commodity. CBD derived from federally legal hemp is also federally legal. However, the FDA has not yet established CBD-specific regulations for dietary supplements or food additives, which creates ongoing regulatory complexity for CBD products specifically.
Did the Farm Bill legalize marijuana?
No. The Farm Bill legalized hemp specifically (cannabis with 0.3% THC or less). Marijuana (cannabis with higher THC content) remains federally controlled, though state-level legalization has expanded significantly.
What's the 0.3% THC threshold in the Farm Bill?
The 2018 Farm Bill defines hemp as cannabis containing not more than 0.3% delta-9 THC on a dry weight basis. Cannabis above that threshold is legally marijuana. The 0.3% threshold isn't biologically significant — it's a regulatory definition that emerged from agricultural and drug policy history.
Has the 2018 Farm Bill been renewed?
The 2018 Farm Bill was scheduled for reauthorization in 2023. As of recent updates, Congress has been operating under short-term extensions rather than passing a new comprehensive bill. Check current congressional status before relying on any timeline assumptions about the next Farm Bill.
What about Delta-8 THC under the Farm Bill?
Delta-8 THC has been one of the biggest unresolved questions in post-2018 hemp regulation. Because the Farm Bill defined hemp by delta-9 THC content specifically, hemp-derived Delta-8 products emerged in a legal gray area. DEA and FDA have both taken positions, and many states have specifically regulated or banned Delta-8. The next Farm Bill may address this directly.
Why is CBD still in regulatory limbo with the FDA?
The Farm Bill legalized hemp as an agricultural commodity but didn't directly address FDA's specific regulatory authority over CBD as a dietary supplement or food additive. FDA has stated CBD doesn't currently meet legal requirements for those categories. Resolving this gap will likely require either FDA rulemaking or specific congressional action.
Can hemp products be sold in all 50 states?
Hemp products are federally legal under the 2018 Farm Bill, but states retain authority to regulate hemp within their borders. Most states allow hemp-derived CBD products, but some have specific restrictions. Verify your state's specific rules before assuming universal legality.
What does the Farm Bill mean for hemp farmers?
The Farm Bill brought hemp back as a legitimate U.S. agricultural commodity for the first time in over 80 years. Hemp farmers can now access crop insurance, USDA loans, conservation programs, and other federal agricultural support — and can sell their crop across state lines.
What's next for hemp regulation?
The likely next major changes involve (1) the next Farm Bill reauthorization, (2) FDA establishing clearer pathways for CBD products specifically, (3) federal-level resolution of Delta-8 and similar hemp-derived compounds, and (4) potential adjustments to the 0.3% THC threshold. Timing on all of these remains uncertain.
Final Thoughts
The 2018 Farm Bill was a transformational piece of legislation that created the modern hemp industry. Seven years later, it remains the legal foundation for hemp and most CBD products in the United States.
The post-2018 reality has been more complicated than the optimism of December 2018 might have suggested. FDA's CBD regulatory framework remains incomplete. Major advertising platforms maintain restrictions. State laws diverge in meaningful ways. New cannabinoids have emerged that the original legislation didn't anticipate.
But the foundational change — hemp as a legal agricultural commodity, CBD as a federally legal product — has held and enabled a substantial industry to develop. The next Farm Bill will likely refine the framework rather than replace it.
For consumers, the practical reality remains: hemp-derived CBD products from compliant U.S. brands are federally legal, widely available, and subject to evolving regulation. Buy from brands that demonstrate compliance through third-party lab testing and transparent labeling.
About the Author
Romas Marcin — Founder, GoGreen Hemp
Romas founded GoGreen Hemp in 2016 — two years before the 2018 Farm Bill — and has spent nearly a decade navigating the evolving hemp regulatory landscape. He leads product development, quality standards, and B2B partnerships, with direct experience operating through the pre-Farm-Bill era, the post-2018 industry expansion, and the ongoing reauthorization debates.
These statements have not been evaluated by the Food and Drug Administration. Hemp-derived products are not intended to diagnose, treat, cure, or prevent any disease or condition. Federal and state hemp regulations continue to evolve — always verify current law for your specific situation. This article provides general information only and is not legal advice.
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