Hemp vs. marijuana: where the legal line is
They're the same plant. The only thing separating "legal hemp" from "illegal marijuana" is a THC number, and Congress is rewriting that number right now.
Same plant, different label
Botanically there is one plant: Cannabis sativa. "Hemp" and "marijuana" are legal categories, not species. Which one a plant counts as depends on how much THC it contains.
The 0.3% rule (2018 Farm Bill)
The 2018 Farm Bill defined hemp as cannabis with no more than 0.3% delta-9 THC by dry weight, and removed hemp from the federal Controlled Substances Act. Anything above that line is marijuana, which is still a Schedule I drug under federal law, even in states that have legalized it.
The loophole
The 0.3% rule only counted one compound, delta-9 THC, and it measured concentration, not dose. That opened three doors:
- Heavy products: 0.3% of a 4-gram gummy is 12 mg of delta-9, which is a real dose. Hemp gummies and THC drinks are built on this math.
- Converted cannabinoids: CBD from legal hemp can be chemically turned into delta-8 and other intoxicating compounds the rule never mentioned. (More on delta-8 →)
- THCA flower: raw THCA isn't delta-9 until it's heated, so high-THCA flower could test as "hemp." (More on THCA →)
The 2026 rewrite (§781)
Section 781 of the federal spending law for fiscal 2026 rewrites the definition of hemp. As industry legal trackers report the timeline:
Nov 12, 2026: cannabinoids the plant can't produce naturally (like THC-O) are no longer hemp. This part was not delayed.
Dec 11, 2026 (delayed from Nov 12 by the September 2026 stopgap): hemp is measured by total THC (THCA counts), finished consumer products are capped at 0.4 mg of total THC per container, and natural cannabinoids made in a lab, which most likely includes delta-8 made from CBD, though that depends on an FDA list of natural cannabinoids that still isn't out, are no longer hemp. Most hemp gummies and drinks today contain 2–10 mg or more.
Industry lawyers estimate that leaves roughly 95% of today's hemp-derived THC products outside the federal definition. Congress has bills that would soften it; as of October 2026 none has passed.
States can go further
The federal definition is a ceiling, not a floor. States can ban products that are still federally legal, as Texas did on July 31, 2026, when it put delta-8, delta-10, THCP and THCA flower on its own Schedule I.
▶ Watch Episode 1 ⏱ Countdown to the deadlines
Last reviewed October 2026 · Not legal advice. Laws change fast; check your state's current law.