Switzerland’s pilot program for legal, recreational marijuana will only allow cannabis clubs to sell organically produced weed, according to a new policy drafted by the National Council’s committee in charge of the program.

Notably, the Swiss government hasn’t actually legalized adult-use weed, nor is national legalization on the table just yet. Switzerland’s organic weed will be grown as part of a 10-year study that will follow 5,000 Swiss adults aged 18 years or older to observe the effects of pot use on the participants’ employment, familial relations, social relations, and general health, Marijuana Business Daily reported. The government will also use the pilot study to assess recreational weed’s effects on the nation’s underground drug markets.

Like all organic produce, Switzerland’s pilot program pot will be cultivated without the use of artificial, petroleum-based pesticides, fertilizers, or herbicides. Meanwhile, in the US — where marijuana remains federally outlawed — the Department of Agriculture bans state-licensed pot companies from labeling any weed products as “organic” due to marijuana’s Schedule I drug status.

In 2017, the Swiss Parliament voted to change the nation’s marijuana laws, but disagreements between the Federal Assembly (which opposed the program) and the Council of States (which supported the program) prevented the study’s rollout. However, in 2018, the Federal Council (which oversees the federal government, somewhat like the US presidency) advised Parliament to approve the study, which it ultimately did in December of last year. Parliament put the National Council’s Committee for Social Security and Health in charge of crafting the pilot program’s specific rules.