Is hemp legal in all 50 states?

The federal law: 2018 Farm Bill

Hemp's federal status changed on December 20, 2018, when President Trump signed the Agriculture Improvement Act (commonly called the 2018 Farm Bill) into law.

The bill removed hemp from the Controlled Substances Act and defined it as Cannabis sativa containing no more than 0.3% delta-9 THC by dry weight.

Hemp is now classified as an agricultural commodity, regulated by the USDA rather than the DEA.

What "federally legal" actually means

Federal legality covers three things: hemp can be grown commercially under USDA-approved state or tribal plans, hemp can be transported across state lines, and hemp-derived products like CBD can be sold in interstate commerce.

It does not mean every hemp product is automatically legal everywhere.

The FDA still regulates hemp-derived ingredients in food, beverages, and dietary supplements, and has not approved CBD as a food additive at the federal level.

State-level restrictions can also override what federal law permits.

States regulate hemp differently

The 2018 Farm Bill explicitly preserves states' rights to regulate hemp within their borders, including the option to ban it entirely (though no state currently bans hemp outright).

What states can and do regulate:

• Cultivation licensing: Each state runs its own hemp program or operates under USDA's federal plan. Licensing requirements, fees, and pre-harvest THC testing protocols vary.
• Retail product rules: Some states require hemp products to be tested by state-certified labs, registered with a state agency, or sold only through licensed retailers.
• Specific cannabinoid restrictions: Delta-8 THC, delta-10 THC, THCA, and HHC are derived from hemp but can produce intoxicating effects. Many states have banned or restricted these so-called "intoxicating hemp" products.
• Smokable flower: A handful of states have restricted or attempted to restrict smokable hemp flower, often citing law enforcement difficulty distinguishing it from marijuana on sight.

States with significant hemp-product restrictions

The list shifts often, but a few patterns hold as of 2026:

• Idaho: Historically the strictest state. Idaho requires hemp-derived consumable products to contain 0% THC (not 0.3%), effectively blocking most national hemp brands from selling there.
• States banning intoxicating hemp cannabinoids: Colorado, New York, Oregon, Washington, Vermont, and a growing number of others have banned or heavily restricted delta-8 THC and similar synthetically derived cannabinoids. Several others (including California and Minnesota) impose milligram caps on THC content per serving and per package.
• Smokable hemp restrictions: Indiana, Louisiana, and Texas have at various points restricted smokable hemp flower, with some restrictions struck down in court.

Travel and shipping

Hemp products that comply with federal law (0.3% delta-9 THC or less) can be shipped via USPS, UPS, and FedEx, and carried on domestic flights. The TSA permits hemp-derived CBD products in carry-on and checked bags. International travel is a different story: many countries ban CBD outright or treat all cannabis-derived products as controlled substances, so check destination laws before traveling.

How to verify the rules in your state

Hemp law changes constantly. Three reliable ways to check current state-level rules:

• Your state's Department of Agriculture website (search "[your state] hemp program")
• The USDA's State and Tribal Hemp Plans directory
• The US Hemp Roundtable's state-by-state CBD and hemp legality map, which is updated regularly

Why this confuses people

Hemp legality often gets conflated with marijuana legality, but they're separate legal frameworks. Hemp is federally legal everywhere.

Marijuana is federally illegal but legal for adult recreational use in 24+ states.

A product that's clearly hemp at the federal level (under 0.3% delta-9 THC) can still be restricted at the state level if it produces intoxicating effects through other cannabinoids or if state law sets a tighter standard.

The bottom line: federally legal hemp does not mean unrestricted hemp.