Quick answer: The federal “hemp ban” is a change to the legal definition of hemp, passed in November 2025. Starting December 11, 2026, federal law counts THCA toward the 0.3% THC limit and caps finished products at 0.4 mg of total THC per container. Most THCA flower tests far above that, so after December 11 it no longer counts as hemp under federal law. State laws still apply on top of this.
If you buy or sell THCA flower, this is the biggest legal change since the 2018 Farm Bill. Here is what changed, when it starts, and what it means for flower, pre-rolls, concentrates, gummies and THC drinks.
Hemp ban key dates
| Date | What happens |
|---|---|
| December 2018 | The 2018 Farm Bill defines hemp as cannabis with no more than 0.3% delta-9 THC by dry weight. THCA is not counted. |
| November 12, 2025 | The President signs P.L. 119-37, a funding law that rewrites the federal hemp definition, with a one-year runway. |
| September 2, 2026 | H.R. 6500 is signed. It moves most of the new hemp rules from November 12 to December 11, 2026. The White House calls it the last extension. |
| November 12, 2026 | Products with cannabinoids that are synthesized, or that the plant cannot make on its own, lose hemp status. This date was not delayed. |
| December 11, 2026 | The total-THC standard and the 0.4 mg per-container cap take effect. |
What changes on December 11, 2026
1. THCA now counts toward the 0.3% limit
Under the old rule, only delta-9 THC was measured. THCA flower could test at 25% THCA and still be hemp, as long as delta-9 THC stayed at or under 0.3%.
The new rule uses total THC. Labs usually calculate it as delta-9 THC + (0.877 x THCA). The 0.877 factor accounts for the weight THCA loses when heat turns it into THC. Learn more in What Is THCA? and Does Smoking THCA Convert It to THC?
| What is measured | Limit | |
|---|---|---|
| Old rule (until Dec. 10, 2026) | Delta-9 THC only | At or under 0.3% delta-9 THC |
| New rule (from Dec. 11, 2026) | Delta-9 THC + 0.877 x THCA | At or under 0.3% total THC |
Here is a simple example. A flower that tests at 20% THCA and 0.2% delta-9 THC has a total THC of about 17.7%. That is roughly 59 times the new limit.
2. A 0.4 mg cap per container
Finished hemp products for people to consume, such as gummies, drinks and tinctures, can hold no more than 0.4 mg of total THC per container. Most THC gummies and THC drinks today carry several milligrams per serving, so they go over the cap.
3. Synthetic cannabinoids are out
Cannabinoids that are synthesized, or that the plant does not make on its own, are excluded from hemp. That part starts on November 12, 2026, and was not delayed.
What the hemp ban means for each product type
| Product | Under the new federal rule |
|---|---|
| THCA flower, snowcaps, moonrocks | Almost all tests above 0.3% total THC, so it is no longer federal hemp. |
| THCA pre-rolls | Same as flower. |
| THCA concentrates (crumble, diamonds, isolate) | Far above 0.3% total THC, so no longer federal hemp. |
| Delta-9 THC gummies and THC drinks | Most go over the 0.4 mg per container cap. |
| THCA shake and trim | Usually lower THCA than bud, but still well above 0.3% total THC. |
This is a federal change. A product that is no longer hemp under federal law is treated as marijuana under federal law, even in a state that has its own hemp rules.
Is THCA being banned?
Not by name. The law does not list THCA as a banned compound. It changes how hemp is measured so that THCA counts. In practice, that removes almost all THCA flower and concentrates from the federal hemp category on December 11, 2026.
Can the hemp ban still change?
Yes. Several bills have been filed in Congress, but none had passed a committee as of early November 2026:
- H.R. 7024 and S. 3686: would delay the new definition to November 12, 2028.
- H.R. 6209: would repeal the new definition.
- H.R. 9830: would set up federal rules to regulate hemp THC products instead of banning them.
December 11 is also the date current government funding runs out, so the next funding bill is the most likely place for any last-minute change. We will update this page if anything moves.
How states fit in
State laws still apply. Many states already restrict or ban THCA flower on their own, and some have already moved to a total-THC standard. See our Is THCA Legal? guide and our state pages for Texas, Florida, Georgia, Tennessee, Alabama, North Carolina and Pennsylvania.
What this means for HIGH THCA customers
Our last date to place an order will likely be on December 10th. However, the federal government is set to revisit this law during their lame duck session beginning on November 9th, 2026. Hopefully the current laws will be extended beyond December 11th. We will keep our customers posted via email.
Until then, every product we sell has a lab report you can check on our certificate of analysis page. The COA lists THCA, delta-9 THC and total THC for each batch.
Hemp ban FAQ
When does the hemp ban start?
December 11, 2026, for the total-THC standard and the 0.4 mg per-container cap. The synthetic cannabinoid exclusion starts November 12, 2026.
Is THCA flower illegal after December 11?
Under federal law, THCA flower above 0.3% total THC is no longer hemp from December 11, 2026. Whether it is legal where you live also depends on your state.
Does the hemp ban affect THC gummies and drinks?
Yes. Finished products are capped at 0.4 mg of total THC per container, which most THC gummies and drinks exceed.
Why was the hemp ban delayed?
The original start date was November 12, 2026. A September 2026 funding law moved most of the rules to December 11, 2026.
How is total THC calculated?
Usually delta-9 THC + (0.877 x THCA). You can find both numbers on a product’s COA.
This page explains the law in general terms and is not legal advice. Laws change quickly, so check the current rules for your state before you buy or sell.
