Cannabis Laws in Idaho

Not legal advice

This article is informational only and is not legal advice. Cannabis laws change, prosecutors exercise discretion, and local enforcement varies. If you are facing a charge or making decisions that depend on the law, consult a licensed Idaho attorney. Information here was last verified in June 2024.

Overall status

Idaho is one of a small handful of U.S. states with no medical cannabis program and no decriminalization of recreational possession ^[1][2]. Every form of cannabis containing THC above trace levels is a controlled substance under Idaho Code Title 37, Chapter 27 ^[3]. Multiple ballot initiatives to legalize medical use have failed to reach the ballot or been blocked procedurally; in 2021 the Idaho Senate passed SJR 101, a proposed constitutional amendment that would have permanently banned legalization of any psychoactive drug not federally approved, though it did not pass the House ^[4].

Idaho shares borders with five states that have legalized cannabis in some form (Oregon, Washington, Montana, Nevada, Utah-medical). State and local police along these borders are known to actively enforce against drivers transporting legally-purchased cannabis back into Idaho ^[2][5]. Strong evidence

Possession penalties

Under Idaho Code § 37-2732(c) ^[3]:

• Three ounces or less of marijuana (flower): misdemeanor, up to 1 year in jail and a fine of up to $1,000.
• More than three ounces: felony, up to 5 years in prison and a fine of up to $10,000.
• More than one pound, or 25+ plants: felony trafficking, with mandatory minimum sentences starting at 1 year and $5,000.

Critically, hashish, concentrates, and edibles are treated separately under § 37-2732(e) as possession of a Schedule I controlled substance other than marijuana — a felony regardless of weight, punishable by up to 5 years and $15,000 ^[3]. A single THC gummy or vape cartridge can therefore trigger a felony charge in Idaho. Strong evidence

Paraphernalia possession (pipes, bongs, grinders with residue) is a separate misdemeanor under § 37-2734A ^[3].

Cultivation, sale, and DUI

Cultivation of any amount is a felony in Idaho; there is no home-grow exception ^[3].

Sale or delivery of marijuana is a felony with penalties scaling by amount, up to life imprisonment for trafficking large quantities ^[3]. Delivery to a minor or within 1,000 feet of a school carries enhanced penalties.

Driving under the influence of cannabis is prosecuted under Idaho's general DUI statute, § 18-8004 ^[3]. Idaho does not have a per se THC blood limit; impairment is established by officer observation, field sobriety tests, and chemical testing. Because THC metabolites can persist for weeks, a positive blood test alone does not establish impairment, but it can support a prosecution. Strong evidence

CBD and hemp

Idaho's CBD rules are unusually strict. Under a 2015 Attorney General opinion that remains the operative guidance, CBD products are legal in Idaho only if they contain 0.0% THC (not the federal 0.3% threshold) and are derived from specific parts of the plant — mature stalks, fiber, seeds incapable of germination, or oil from such seeds ^[6]. Most CBD products sold nationally exceed the 0.0% THC standard and are therefore technically illegal in Idaho. Strong evidence

Idaho was the last state to authorize industrial hemp production, doing so only in 2021 after HB 126 created a regulated hemp program aligning more closely with the 2018 federal Farm Bill ^[7]. However, the strict 0.0% THC standard for finished consumer CBD products was not changed by that legislation. Disputed (Enforcement against retail CBD products has been inconsistent; the legal exposure remains.)

Crossing state lines

Transporting cannabis across state lines is a federal offense regardless of the laws of either state involved ^[8]. Under Idaho law, the moment you enter Idaho with cannabis, you are in possession under state law and subject to the penalties above. Idaho State Police have a documented record of stopping vehicles on I-84, I-90, and US-95 near border crossings; cannabis odor remains a basis for vehicle search under Idaho case law, unlike in several neighboring legal states ^[5]. Strong evidence

Medical cannabis cards from other states are not recognized in Idaho.

Reform efforts and outlook

Polling has consistently shown majority Idaho voter support for medical cannabis legalization ^[9], but the legislature has moved in the opposite direction. The 2021 SJR 101 effort sought to constitutionally prohibit future legalization ^[4]. Citizen initiative campaigns (notably by Kind Idaho) have repeatedly failed to gather sufficient signatures under Idaho's stringent ballot-access rules, which were tightened further in 2021. As of mid-2024 there is no active medical cannabis legislation with a realistic path to passage. Strong evidence

For neighboring jurisdictions, see Cannabis Laws in Oregon, Cannabis Laws in Washington, and Cannabis Laws in Montana.

Sources

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