Last updated: February 2026
Overview
California has both a regulated cannabis market and a legal hemp market, which often causes confusion for consumers. Many people assume all cannabinoid products fall under the same rules, but hemp-derived products are regulated differently from marijuana products.
This guide explains how California law evaluates hemp flower and how THCA products fit within those regulations.
Hemp vs Marijuana in California
California distinguishes hemp from marijuana based on Delta-9 THC concentration measured by dry weight.
Hemp products containing no more than 0.3% Delta-9 THC are classified as hemp under federal and state standards. Marijuana products exceed this threshold and fall under the state's cannabis retail system.
Because of this distinction, laboratory testing determines whether a product qualifies as hemp.
Where THCA Fits In
THCA is a naturally occurring cannabinoid present in raw hemp flower. In its original state it differs chemically from Delta-9 THC.
Legal classification relies on measured Delta-9 THC levels at the time of testing. For this reason, reputable retailers provide documented lab reports confirming compliance.
Purchasing Hemp Flower in California
Consumers may purchase compliant hemp products sourced from licensed growers and accompanied by testing documentation.
Customers comparing indoor-grown options often review strains such as Mendo Runtz hemp flower and Gushers hemp flower due to terpene profile and cultivation consistency.
Drug Testing Considerations
Drug tests detect THC metabolites rather than labeling categories.
Because hemp products contain cannabinoids, usage may result in a positive test depending on frequency and individual sensitivity.
Anyone subject to testing should avoid cannabinoid products.
Shipping and Local Rules
Retailers may limit shipments based on changing interpretations of hemp regulations. Customers should review shipping restrictions before ordering.
Regulatory Environment
California hemp regulations continue to evolve alongside its cannabis program. Consumers should stay informed using official state guidance and purchase from transparent sources providing testing documentation.
Related State Guides
Looking for another state? View the full THCA legality hub.
Final Thoughts
California permits hemp products that meet federal Delta-9 THC limits and testing standards. Understanding the distinction between hemp and marijuana helps consumers navigate purchasing decisions more confidently.