Learn · Compliance
Is THCa legal? A state-by-state guide
THCa flower sits in the gap between two ways of measuring potency. Federal hemp law counts delta-9 THC; a growing number of states count total THC. Which yardstick your state uses decides whether a jar can legally land on your doorstep. Here is the plain-language version, plus where each state currently stands.
The 2018 Farm Bill, briefly
The 2018 Farm Bill removed hemp from the Controlled Substances Act and defined it as cannabis containing no more than 0.3% delta-9 THC by dry weight. Because THCa is a distinct, non-intoxicating acid, flower can test at 22% THCa and 0.2% delta-9 and still meet that definition on paper — even though heating it produces a high-THC experience. USDA testing rules for growers use a post-decarboxylation "total THC" figure, and that mismatch between production testing and retail product testing is the entire legal argument.
Total THC vs delta-9 THC
Total THC = delta-9 THC + (THCa × 0.877). The 0.877 accounts for mass lost when the carboxyl group leaves during decarboxylation. States that write "total THC" into their hemp statutes effectively ban high-THCa flower; states that mirror the federal delta-9-only language generally allow it. A handful of states take a third route: they permit hemp edibles and beverages but prohibit smokable hemp entirely. For the chemistry behind the multiplier, read our THCa vs THC guide.
State-by-state status
Educational summary only — not legal advice. Hemp statutes change every legislative session, so confirm your current state law before ordering.
| State | THCa flower | Notes |
|---|---|---|
| Alabama | Generally allowed | Delta-9 standard; smokable hemp sales restricted for under-21. |
| Alaska | Not shippable | Hemp products with intoxicating cannabinoids are barred outside licensed retail. |
| Arizona | Restricted | Regulators treat intoxicating hemp cautiously; enforcement varies. |
| Arkansas | Not shippable | Act 629 restricts intoxicating hemp derivatives. |
| California | Restricted | Inhalable hemp products are prohibited outside the licensed cannabis market. |
| Colorado | Restricted | Intoxicating hemp cannabinoids are limited to the licensed market. |
| Connecticut | Not shippable | High-THC hemp is confined to licensed cannabis retailers. |
| Delaware | Restricted | Smokable hemp faces state limits. |
| Florida | Generally allowed | Delta-9 standard; 21+ purchase requirements apply. |
| Georgia | Restricted | Total-THC style limits apply to consumable hemp. |
| Hawaii | Not shippable | Smokable hemp and most intoxicating cannabinoids are prohibited. |
| Idaho | Not shippable | Any detectable THC is prohibited. |
| Illinois | Generally allowed | Delta-9 standard, with active legislative proposals to restrict. |
| Indiana | Generally allowed | Delta-9 standard; smokable hemp rules have been litigated. |
| Iowa | Restricted | Consumable hemp limits by serving; smokable hemp discouraged. |
| Kansas | Not shippable | State law follows a total-THC reading. |
| Kentucky | Restricted | Delta-9 standard with age and labeling rules. |
| Louisiana | Not shippable | Smokable hemp flower sales are prohibited. |
| Maine | Generally allowed | Delta-9 standard for hemp products. |
| Maryland | Restricted | Intoxicating hemp is routed to the licensed cannabis market. |
| Massachusetts | Restricted | Regulators limit intoxicating hemp outside licensed retail. |
| Michigan | Restricted | Intoxicating hemp cannabinoids are regulated as marijuana. |
| Minnesota | Restricted | Low-dose edibles allowed; THCa flower restricted. |
| Mississippi | Not shippable | Smokable hemp flower is prohibited. |
| Missouri | Generally allowed | Delta-9 standard; executive actions have targeted edibles. |
| Montana | Generally allowed | Delta-9 standard. |
| Nebraska | Restricted | Enforcement has treated high-THCa flower as marijuana. |
| Nevada | Not shippable | Intoxicating hemp is limited to licensed cannabis retail. |
| New Hampshire | Generally allowed | Delta-9 standard. |
| New Jersey | Restricted | Intoxicating hemp moved under cannabis regulation. |
| New Mexico | Generally allowed | Delta-9 standard. |
| New York | Not shippable | Total-THC limits bar high-THCa flower. |
| North Carolina | Generally allowed | Delta-9 standard with 21+ requirements. |
| North Dakota | Not shippable | State law restricts intoxicating hemp derivatives. |
| Ohio | Generally allowed | Delta-9 standard; restriction bills pending. |
| Oklahoma | Generally allowed | Delta-9 standard. |
| Oregon | Not shippable | Total-THC limits apply to hemp products. |
| Pennsylvania | Generally allowed | Delta-9 standard. |
| Rhode Island | Not shippable | Intoxicating hemp restricted to licensed cannabis. |
| South Carolina | Generally allowed | Delta-9 standard; enforcement guidance shifts. |
| South Dakota | Restricted | Smokable hemp faces state limits. |
| Tennessee | Restricted | Total-THC style rules and 21+ requirements apply. |
| Texas | Generally allowed | Delta-9 standard; smokable hemp litigation ongoing. |
| Utah | Not shippable | Hemp flower sales are restricted. |
| Vermont | Not shippable | Hemp-derived THC products are barred outside licensed cannabis. |
| Virginia | Restricted | Total-THC and per-package THC caps apply. |
| Washington | Not shippable | Intoxicating hemp is limited to the licensed market. |
| West Virginia | Generally allowed | Delta-9 standard. |
| Wisconsin | Generally allowed | Delta-9 standard. |
| Wyoming | Not shippable | State law follows a total-THC reading. |
Before you order
- 1. Check your state's yardstick. Delta-9 only, or total THC? That single detail decides most of it.
- 2. Check for a smokable-hemp ban. Some states allow gummies and drinks while barring flower and pre-rolls.
- 3. Read the COA. The delta-9 figure must be at or under 0.3% by dry weight, from a batch-matched, dated report.
- 4. Keep the paperwork. Save the COA with your order confirmation — it is the document that shows the product is hemp.
FAQ
Is THCa legal under federal law?
Federal law defines hemp by delta-9 THC content: 0.3% or less by dry weight. THCa is a separate compound, so hemp-derived THCa flower that stays under that delta-9 threshold falls inside the federal hemp definition. Some regulators read the Farm Bill's post-decarboxylation language as covering total THC, which is why the question is still contested.
What is the difference between total THC and delta-9 THC?
Total THC = delta-9 THC + (THCa x 0.877). States that regulate total THC treat high-THCa flower as marijuana; states that regulate delta-9 alone generally allow it.
Can THCa flower be shipped to my state?
It depends on whether your state uses a total-THC standard, bans smokable hemp, or restricts hemp products to licensed dispensaries. Check the table below and your current state statute before ordering — laws change every legislative session.
Will THCa show up on a drug test?
Yes. Standard tests look for THC metabolites, and THCa converts to THC when heated. Treat THCa flower exactly like any high-THC product for testing purposes.
We only ship where it is legal to ship.
Checkout screens every order against current state rules, and every jar ships with its lab report attached.
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