Start With This: One Federal Rule, Many Local Ones
Current hemp rules for your location come from two layers: a federal chemical threshold that applies everywhere, and a state or local rule that can add restrictions on top of it. To find out what actually applies to you, you need to check official government sources for your exact state and city — not a blog post, a seller’s website, or a product label.
This guide shows you how to find that information yourself, record it accurately, and know when it’s time to check again. For general background on how we cover this topic, see our Cannabis and Cannabinoid Science overview.
The Federal Baseline, in Plain Language
Federal law separates “hemp” from “marijuana” using a chemical test. Under the 2018 farm bill, hemp is defined as the cannabis plant and its derivatives containing no more than 0.3% delta-9 tetrahydrocannabinol (THC) on a dry-weight basis. Product that meets this threshold is regulated as an agricultural commodity by the U.S. Department of Agriculture (USDA) rather than as a controlled substance by the Drug Enforcement Administration (DEA).
That federal change did not hand hemp products a blanket “safe to sell and use everywhere” status. The same 2018 farm bill specifically preserved the U.S. Food and Drug Administration’s (FDA) authority over these products under the Federal Food, Drug, and Cosmetic Act. The FDA has taken the position that it’s unlawful to add CBD to food sold across state lines, or to market CBD as a dietary supplement, regardless of whether it’s hemp-derived. That federal position exists alongside — not instead of — whatever your state or city decides to do.
Evidence Ladder: Where to Look, in Order
Government sources aren’t all equally authoritative. Work down this ladder, and stop when you find a rule written by the body that actually enforces it.
- Federal statute and agency guidance. This sets the outer boundary — the 0.3% delta-9 THC test, and FDA/USDA/DEA jurisdiction. It tells you what’s possible, not what’s allowed where you are.
- Your state government’s official website. Use USAGov’s state government directory to find your state’s official (.gov) site. Look for the agency that actually regulates hemp or cannabinoid products in your state — this is sometimes the department of agriculture, sometimes the department of health, and sometimes a dedicated cannabis or alcohol/beverage control board. Agencies vary by state, so don’t assume it matches a neighboring state.
- Your state legislature’s official bill-tracking site. State agency guidance pages don’t always reflect a law passed last month. Search your state legislature’s site (also reachable through the USAGov directory) for recently passed or pending bills mentioning “hemp,” “cannabinoid,” or “THC.”
- Your city or county government website. Some localities add zoning, age-verification, or retail-licensing rules on top of state law, even when the state itself is permissive. USAGov’s state and local government directory can help you find your city or county’s official page.
If a rule you find only appears on a retailer’s site, a news article, or a forum, treat it as a lead — not a confirmed fact — until you find it on an official .gov page.
Known Versus Unknown
Being honest about what you can and can’t confirm is part of doing this correctly.
What you can generally know for certain:
- The federal delta-9 THC threshold that separates hemp from marijuana under the 2018 farm bill.
- Which federal agencies have jurisdiction (USDA for cultivation, FDA for consumer products, DEA for anything exceeding the federal hemp definition).
- The exact text of your state’s current hemp or cannabinoid statute, once you locate it on your state’s official site.
What often can’t be known with certainty from a single search:
- Whether a state rule you found is the most recent version, since legislatures amend these laws frequently.
- Whether a specific product format is treated the same as hemp generally, since some states regulate certain cannabinoids more strictly than others.
- Whether local ordinances add restrictions beyond the state rule, since not every city or county publishes cannabinoid-specific policy in an easy-to-find place.
When you can’t confirm something from an official source, record it as unconfirmed rather than guessing.
Build Your Own Record: A Practical Checklist
Use this checklist to create a simple record you can refer back to. For each jurisdiction that applies to you (state, and city or county if relevant), record:
- Jurisdiction name — the exact state, city, or county.
- Agency responsible — the specific department or board that enforces the rule.
- Product definition used — how that jurisdiction defines “hemp” or “hemp-derived” (note whether it matches the federal 0.3% delta-9 THC threshold or differs).
- Effective date — when the current rule took effect, so you know how recent it is.
- Source link — the exact .gov page where you found the rule, so you or someone else can re-verify it later.
- Date you checked — because these rules change, note when you looked this up.
Because state and local hemp rules change without much public notice, set a reminder to repeat this check every few months, or any time you hear that legislation is moving in your state.
Frequently Asked Questions
Does federal hemp legality mean a product is legal in every state?
No. Federal law sets a chemical threshold (0.3% delta-9 THC or less) that determines whether something is legally “hemp” rather than “marijuana.” States and localities can still add their own restrictions on top of that federal baseline, so federal legality alone doesn’t confirm state or local legality.
Which federal agency actually regulates hemp products?
More than one. USDA oversees hemp cultivation as an agricultural commodity. The FDA retains authority over how hemp-derived products like CBD can be marketed in food, dietary supplements, and other consumer goods under the Federal Food, Drug, and Cosmetic Act. The DEA regulates cannabis that exceeds the federal hemp threshold.
Can I market or sell CBD as a dietary supplement?
According to the FDA’s stated position, no — the agency has said it’s unlawful to market CBD as, or in, a dietary supplement, or to add it to food sold across state lines, regardless of whether it’s hemp-derived. This is a federal-level position, separate from whatever a specific state allows.
Where do I find my state’s official hemp regulations?
Start with USAGov’s state government directory to find your state’s official .gov site, then locate the agency that regulates hemp or cannabinoid products. That agency differs from state to state.
How often do state hemp laws change?
Frequently enough that a rule you confirmed a year ago may no longer be current. This guide doesn’t state a specific frequency because it varies by state and isn’t something a single source can verify — treat any hemp rule you find as time-stamped, and recheck it periodically using the same official sources.
What This Guide Does Not Do
This article explains how to research hemp law for yourself. It is not legal advice, and it does not tell you whether a specific product is legal in your location. Laws vary by state and locality and change over time. If you need a definitive answer for a legal question — including questions about possession, sale, shipping, or a specific enforcement situation — contact your state or local regulatory agency directly, or consult a licensed attorney in your jurisdiction.
This article is for general educational purposes only and does not constitute legal advice. Take Hemp Gummies is an independent educational publication; verify current regulations with official government sources before making decisions based on this information. Learn more about how we research and source our content in our Editorial Policy.
By TakeHempGummies.com Consumer Research Desk
Last updated: September 2026