The discovery of illegal marijuana grow sites in national forests spanning Oregon and Washington declined after each state legalized recreational cannabis, a new study reports.
But while legalization appears to have been a driving factor for decreased illicit cultivation in Oregon, that doesn’t seem to be the case in Washington. The difference, it seems, may have to do with the way each state wrote its marijuana laws.
“Given the decrease in abundance of marijuana grow sites in Oregon national forests…this study suggests that liberalized marijuana policies in Oregon have contributed to a decrease in ecological damage in national forests resulting from illegal marijuana cultivation,” the authors wrote.
Previous studies have already identified certain benefits from legalization, including those impacting health and the economy. In the new investigation, researchers from Central European University in Hungary were interested in looking at whether legal access to marijuana could also help the environment.