File photograph of a marijuana starter plant for sale at Canna Pi medical marijuana dispensary in Seattle

 
File photograph of a marijuana starter plant for sale at Canna Pi medical marijuana dispensary in Seattle
A marijuana starter plant is for sale at Canna Pi medical marijuana dispensary in Seattle, Washington in this November 20, 2012 file photograph. The passage of the ballot measures in Colorado and Washington state in November 2012 allowed personal possession of the drug for people 21 and older. That same age group will be allowed to buy the drug at special marijuana stores under rules set to be finalized next year in 2013. REUTERS/Anthony Bolante/Files