Now that cannabis has been decriminalized in New Hampshire (due to the passage of House Bill 640 this summer), you may be wondering how old you have to be to smoke weed in the Granite State. The state's residents voted in favor of legalizing medicinal cannabis in 2013, meaning that adults at least 18 years of age with a medical marijuana (MM) card from New Hampshire (or any state) can smoke weed in the Granite State. Minors with a qualifying condition for an MM card who are under the age of 18 must appoint a legal parent or guardian (who is at least 21 years old with no felony convictions) to act as a caregiver.

However, even though cannabis was decriminalized earlier this year, it's still illegal to just go out and smoke weed in public, and the new law only applies to first-time adult offenders caught with less than ¾ of an ounce of marijuana or less than five grams of hashish. Rather than jail time and a hefty fine, these individuals are now subject to a ticket and $100 fine.

New Hampshire allows MM patients who are at least 18 years old to smoke weed (or consume cannabis in other ways) in private residences. Patients can to have up to two ounces of cannabis, but they can't grow their own medicine. They must register with the New Hampshire Health Department’s medical cannabis program, and they have to get their MM products from just one (though they may change their choice) of a handful of state-licensed Alternative Treatment Centers.

To end, remember that even if you're 18 and allowed to smoke weed in New Hampshire because you're an MM patient, it's illegal to consume marijuana or be under the influence of cannabis in any way while operating a motorized vehicle or machine. Also, despite the herb's decriminalized status in the state, it's still illegal to transport cannabis out of New Hampshire in any way. You can learn more about the New Hampshire's Therapeutic Cannabis Program and state's rules for 18-year-old MM patients to smoke weed by contacting the New Hampshire Department of Health and Human Services.