The legality of THCA flower remains a gray area in many U.S. states. While the 2018 Farm Bill legalized hemp-derived products containing less than 0.3% delta-9 THC on a dry weight basis, some states regulate total THC content, including THCA (tetrahydrocannabinolic acid), which converts into delta-9 THC when heated.

To help businesses and consumers navigate state-specific laws, we’ve compiled this comprehensive guide on THCA flower legality across all 50 states.

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THCA Flower Legality by State (A–Z)

Alabama

✅ Legal – THCA flower is allowed if it contains less than 0.3% delta-9 THC by dry weight.

Alaska

✅ Legal – No restrictions on the sale or use of THCA flower.

Arizona

✅ Legal – THCA flower is permitted with no additional regulations.

Arkansas

❌ Illegal – The state includes THCA in total THC calculations, making THCA flower unlawful.

California

✅ Legal – THCA flower is permitted under state law.

Colorado

❌ Illegal – Colorado regulates total THC content, making THCA flower prohibited.

Connecticut

✅ Legal – No specific restrictions on THCA flower.

Delaware

❌ Illegal – The state counts THCA toward total THC, making it unlawful.

Florida

✅ Legal – THCA flower is permitted without additional restrictions.

Georgia

✅ Legal – No additional regulations on THCA flower.

Hawaii

❌ Illegal – The state restricts total THC content, including THCA.

Idaho

❌ Illegal – Idaho requires hemp products to have zero THC, including THCA.

Illinois

✅ Legal – No restrictions on THCA flower.

Indiana

✅ Legal – THCA flower is allowed without additional regulations.

Iowa

❌ Illegal – Iowa considers THCA in total THC calculations, making THCA flower unlawful.

Kansas

❌ Illegal – The state prohibits all THC isomers, including THCA.

Kentucky

✅ Legal – THCA flower is allowed.

Louisiana

❌ Illegal – While hemp-derived products are legal, all flower products are banned.

Maine

✅ Legal – No restrictions on THCA flower.

Maryland

✅ Legal – THCA flower is permitted.

Massachusetts

✅ Legal (With Restrictions) – THCA flower can only be sold by licensed dispensaries.

Michigan

❌ Illegal – The state regulates total THC content, making THCA flower unlawful.

Minnesota

❌ Illegal – THCA is counted toward total THC, making it unlawful.

Mississippi

❌ Illegal – THCA flower is prohibited due to total THC regulations.

Missouri

✅ Legal – THCA flower is permitted.

Montana

✅ Legal – THCA flower is allowed.

Nebraska

✅ Legal – No restrictions on THCA flower.

Nevada

✅ Legal – THCA flower is allowed.

New Hampshire

✅ Legal – No additional regulations on THCA flower.

New Jersey

✅ Legal – No restrictions on THCA flower.

New Mexico

❌ Illegal – The state regulates total THC, making THCA flower prohibited.

New York

❌ Illegal – THCA flower is banned due to total THC restrictions.

North Carolina

✅ Legal – THCA flower is permitted with no additional restrictions.

North Dakota

✅ Legal – No restrictions on THCA flower.

Ohio

❌ Illegal – Ohio considers total THC content, making THCA flower unlawful.

Oklahoma

✅ Legal – No specific restrictions on THCA flower.

Oregon

❌ Illegal – THCA products, including flower, are banned.

Pennsylvania

✅ Legal – The state does not test for total THC, allowing THCA flower.

Rhode Island

❌ Illegal – THCA flower is prohibited.

South Carolina

✅ Legal – No restrictions on THCA flower.

South Dakota

⚠️ Gray Area – While hemp-derived products are legal, the sale of smokable hemp is a misdemeanor.

Tennessee

✅ Legal – No restrictions on THCA flower.

Texas

✅ Legal – THCA flower is allowed, though regulation is unclear.

Utah

❌ Illegal – Utah considers total THC content, making THCA flower unlawful.

Vermont

❌ Illegal – The state regulates total theoretical THC, banning THCA flower.

Virginia

❌ Illegal – Virginia considers THCA part of total THC, making it unlawful.

Washington

✅ Legal (With Restrictions) – THCA flower is only sold by licensed dispensaries.

West Virginia

❌ Illegal – THCA flower is prohibited due to total THC regulations.

Wisconsin

❌ Illegal – The state tests for total THC, making THCA flower unlawful.

Wyoming

✅ Legal – No restrictions on THCA flower.

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Final Thoughts

As seen above, the legality of THCA flower varies widely across the United States. Some states follow federal guidelines, while others have stricter regulations including THCA in total THC calculations.

Key Takeaways:

✔️ THCA flower is legal in many states that adhere to federal hemp laws.
⚠️ Some states have gray areas where testing methods and enforcement vary.
❌ Certain states prohibit THCA flower, considering it part of total THC content.

Before buying, selling, or possessing THCA flower, always check your state’s latest laws to ensure compliance. Regulations change frequently, so staying informed is crucial.

📌 Have questions? Let us know in the comments! Stay updated for future changes in hemp laws. 🚀