PREMIUM

THCa Flower

Our THCa flower is carefully cultivated to deliver unmatched purity, potency, and flavor. Each strain is hand-selected for its rich terpene profile, dense structure, and smooth, clean burn.

Shop Now

TOP SHELF

THCa Pre-Rolls

Potent, flavorful, and consistent—our THCa pre-rolls are crafted to deliver a premium experience from first spark to finish.

Shop Now

Questions about THCa?

What is THCa?

Delta 9 THCa is a naturally occurring phytocannabinoid in the cannabis plant. It is the acid variation of the famous cannabinoid D9 THC. Raw THCa is non-psychoactive. However, when heated, THCa converts to THC. This change is what delivers the intense and euphoric psychoactive effects of traditional cannabis.

Harvested THCa flower is federally legal if the lab test proves it is below the 0.3% D9 THC limit. Even in recreational or illegal flower, THCa is the primary cannabinoid, and the D9 THC can range somewhere between 0.4% to 1.0%. For example, a strain with 20% THCa and 0.2% D9 THC in its harvested buds is federally legal and protected under the Farm Bill.

Is THCa Legal?

Short answer? It depends on your state.

Under the 2018 Farm Bill, hemp-derived cannabinoids like THCA are federally legal, provided the final product contains less than 0.3% delta-9 THC by dry weight. This means we can legally ship THCA flower, pre-rolls, and concentrates to most states.

Do laws around THCa vary between states?

Some states have imposed their own restrictions or bans due to concerns about THCA converting to delta-9 THC when heated. States like Rhode Island, South Dakota, North Carolina, South Carolina, and New Hampshire have regulations that may impact the legality of THCA products.

Are GreenThumb Clubs Products Lab Tested?

All of our THCA products are third-party lab tested for purity, potency, and compliance.

Legal & Compliance Notice for THCA Products

This site offers hemp-derived products intended solely for legal adult use. These products are not approved by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or medical condition.

Information presented on this website is for general informational purposes only. It should not be interpreted as medical advice. Consult a licensed healthcare professional before using any cannabinoid product, especially if you are pregnant, nursing, have a medical condition, or are taking medications.

All products sold contain less than 0.3% Delta-9 THC by dry weight in compliance with the 2018 Farm Bill. THCA content and Delta-9 THC content are clearly listed on each product page for transparency and legal clarity.

These products are intended for use by adults 21 years of age and older. By accessing or purchasing from this site, you confirm you are of legal age and agree to comply with all applicable laws and our Terms & Conditions.