What Is the 2018 Farm Bill—for Dummies?
Hemp and Cannabis Confusion Never Seems to End
Confused about hemp laws, CBD legality, or delta-8? This plain-English guide explains what the 2018 Farm Bill actually did, why loopholes emerged, and what’s changing now—without legal jargon.
The 2018 Farm Bill — Explained Simply
The 2018 Farm Bill (officially the Agriculture Improvement Act of 2018) is the law that made hemp legal under federal law. Before it passed, cannabis and hemp were treated much more similarly at the federal level, which limited farming, commerce, and consumer access.
This bill changed the game by creating a legal line between hemp and marijuana—based on one specific measurement.
What Did the 2018 Farm Bill Do for Hemp?
In simple terms, the law said:
Hemp is legal if it contains no more than 0.3% delta-9 THC by dry weight.
Hemp and “hemp derivatives” were carved out from federal cannabis restrictions in a way that enabled lawful farming and commerce.
States and tribal authorities can regulate hemp production under approved programs.
Hemp-derived cannabinoids (like CBD) became widely available—though regulation is still complicated.
That “0.3% delta-9 THC” line is why you see so many products marketed as hemp-derived.
Hemp vs. Marijuana: What’s the Legal Difference?
Hemp and marijuana are both cannabis plants. The difference is legal, not botanical.
Hemp: cannabis containing ≤ 0.3% delta-9 THC by dry weight
Marijuana: cannabis containing > 0.3% delta-9 THC by dry weight
Marijuana rules vary by state. Hemp is federally legal under that threshold—though states can still restrict what’s sold.
Is CBD Legal Federally in 2025?
Generally, yes—if it’s hemp-derived. But there’s an important nuance:
The Farm Bill opened the door for hemp-derived CBD.
The FDA still restricts how CBD can be marketed (especially as a dietary supplement or food additive across state lines).
States can also impose stricter rules.
That’s why you’ll see CBD sold widely online, yet still hear confusion about what’s “allowed.”
Why Delta-8 Became Popular (and Controversial)
After 2018, companies discovered they could create delta-8 THC from hemp-derived cannabinoids (often CBD).
Because the Farm Bill definition focuses on delta-9 THC, some delta-8 products were sold as “federally legal hemp” if they stayed under the delta-9 threshold—even though delta-8 can be intoxicating.
Result: huge consumer demand, lots of state-level restrictions, and a federal push to tighten definitions around intoxicating hemp products.
What Is the THCA Loophole?
THCA is the acidic precursor to THC found in raw cannabis flower.
Here’s the core issue:
THCA itself is not delta-9 THC.
When heated (smoked/vaped), THCA converts into delta-9 THC.
Some flower products are sold with low delta-9 THC but high THCA, and marketed as “legal hemp.”
This is what people mean by the “THCA loophole.”
Total THC vs. Delta-9 THC (Why This Keeps Coming Up)
In plain English:
Delta-9 THC is one form of THC (the one named in the Farm Bill definition).
Total THC is a broader measurement concept that can include THC that’s “potentially available” after conversion (like THCA turning into delta-9 when heated).
New federal proposals and agency enforcement trends increasingly focus on closing loopholes tied to intoxicating hemp products—often by moving toward Total THC-style definitions and restricting synthetic/converted cannabinoids.
What’s Changing Now? (The “New Hemp Bill” Conversation)
In 2024–2025, lawmakers and regulators ramped up scrutiny of intoxicating hemp. The direction of travel is clear:
Tighter definitions of hemp for finished consumer products
Stronger restrictions on intoxicating hemp cannabinoids
More enforcement around synthetic or chemically converted cannabinoids
More state-level limits like age gates, licensing, and milligram caps
Translation: the “anything goes” era is ending. Consumers need clearer labels, better COAs, and state-aware buying decisions.
Can You Fly With CBD in 2025 and 2026?
In general:
Hemp-derived CBD is broadly allowed federally,
But your departure and destination states can still matter,
And products that look/feel intoxicating are more likely to create problems.
If you travel:
Keep products in original packaging,
Avoid anything that could be interpreted as “intoxicating hemp,”
Carry a COA if you have it,
- Check destination rules before you pack.
Read our full Traveling with CBD and Cannabis products guide here.
Be a Fountain of Knowledge
Dosing Guides → https://cbdeeme.com/dosing-guides/
THC vs CBD Explained → https://cbdeeme.com/cbd-vs-thc-for-anxiety/
Quick Summary
The 2018 Farm Bill legalized hemp, not marijuana.
The legal line is 0.3% delta-9 THC by dry weight.
CBD is broadly legal if hemp-derived, but the FDA still restricts certain uses/claims.
Delta-8 and THCA grew fast because they lived in gray areas tied to the delta-9 definition.
The “new hemp bill” momentum is about closing loopholes and restricting intoxicating hemp products.
FAQs
1) What did the 2018 Farm Bill do for hemp?
It federally legalized hemp by defining it as cannabis with no more than 0.3% delta-9 THC by dry weight, enabling lawful farming and commerce under approved programs.
2) Did the 2018 Farm Bill legalize CBD?
It enabled hemp-derived CBD to be sold broadly, but CBD is still regulated—especially around how it can be marketed in foods and supplements across state lines.
3) Is CBD legal federally in 2025?
Generally yes if hemp-derived, but rules vary by state and the FDA still restricts certain CBD marketing categories.
4) Is delta-8 legal under the Farm Bill?
Delta-8 legality depends heavily on your state. The Farm Bill’s delta-9 focus contributed to a gray area that many states are now restricting.
5) What is the THCA loophole?
It refers to cannabis flower sold as “hemp” because it has low delta-9 THC, even though it contains high THCA that can convert into delta-9 THC when heated.
6) What’s the difference between delta-9 THC and Total THC?
Delta-9 is a specific THC molecule; “Total THC” is a broader measurement concept that can include THC potential from compounds like THCA after conversion.
7) What is the new hemp bill in 2025 trying to change?
The trend is toward tightening hemp definitions, restricting intoxicating hemp cannabinoids, and reducing loopholes that allow hemp products to function like marijuana products.
8) Is hemp the same thing as marijuana?
They’re both cannabis plants, but legally hemp is defined by a THC threshold; marijuana exceeds it.
9) Can I fly with CBD in 2025?
Often yes for hemp-derived CBD, but destination state rules matter and intoxicating items are more likely to cause issues. Keep original packaging and a COA when possible.
10) What should I look for before buying hemp gummies, vapes, or drinks?
Clear labeling (mg per serving), third-party COAs, compliant age-gating where required, and state-appropriate legality.