Technically speaking, THCa cartridges are not considered a Schedule I drug and are therefore legal.This is largely due to the 2018 Farm Bill.
Hemp products are legal as long as they meet the legislation’s definition of hemp. The 2018 Farm Bill categorizes hemp as legal if it contains a concentration of less than 0.3% Delta 9 THC on a dry weight basis.
THCa is not explicitly mentioned in the bill’s categorization of hemp. So it remains a legal gray area. For the time being, current loopholes in the legislation allow for companies to create legal THCa products.
Even though THCa isn’t considered an illegal Schedule 1 substance at the federal level, state laws can vary. States are allowed to outlaw THCa and other cannabinoids altogether. Be sure to check with your local laws before buying any hemp products.