is hemp illegal to grow in the united states
Hemp Hemp was made illegal to grow without a permit in the U.S. under the Controlled Substances Act passed in 1970 because of its relation to marijuana,[17] and any imported hemp products must meet a zero tolerance level.[105] Some states have made the cultivation of industrial hemp legal, but farmers in many states have not yet begun to grow it because of resistance from the federal Drug Enforcement Administration,[106] making "large-scale hemp growing" in the United States "not viable" as late as 2013.[107] In 2013, after the legalization of cannabis in the state, several farmers in Colorado planted and harvested several acres of hemp, bringing in the first hemp crop in the United States in over half a century.[108] Colorado,[109] Vermont, California, and North Dakota have passed laws enabling hemp licensure. All four states are waiting for permission to grow hemp from the DEA. Currently,[110] Oregon has licensed industrial hemp as of August 2009[update].[111] Congress included a provision in the Agricultural Act of 2014 that allowed colleges and state agencies to grow and conduct research on hemp in states where it is legal.[17] Hemp production in Kentucky, formerly the United States' leading producer, resumed in 2014.[112]
Cannabis in Colorado Since the enactment of Colorado Amendment 64 in November 2012, adults aged 21[16] or older can grow up to six marijuana plants (with no more than half being mature flowering plants) privately in a locked space, legally possess all marijuana from the plants they grow (as long as it stays where it was grown),[17] legally possess up to one ounce of marijuana while traveling,[18] and give as a gift up to one ounce to other citizens 21 years of age or older. Any adult in Colorado's territory may possess up to one ounce of marijuana at any time, regardless of whether they are an in-state resident or an out-of-state visitor, as of 2016. Retail concentrate/edible limits are as follows: 8g of retail concentrate will be equal to 1oz of flower, and therefore 800mg of THC in the form of retail edibles will be equal to 1oz of retail flower.[19] Consumption is permitted in a manner similar to alcohol, with equivalent offenses prescribed for driving.[20] Consumption in public was recently passed in Denver under Ordinance 300 with a vote of 53% for legal public consumption, and a 46% vote against. Within 60 days the new rules will be written and should be similar to current public alcohol consumption rules and regulations.[21][22][23] Amendment 64 also provides for licensing of cultivation facilities, product manufacturing facilities, testing facilities, and retail stores.[24] Visitors and tourists in Colorado can use and purchase marijuana, but face prosecution if found in possession in any adjacent state. Denver airport has banned all possession of marijuana but admits it has not charged a single person with possession nor has the airport seized any marijuana since the ban went into effect.[25][26]