Cannabis in all types was made illegal in Sweden in 1930⁵, shortly soon after an analogous regulation was handed in Holland. Then, Sweden grew to become among the signatories with the UN Conference on Drugs in 1961⁶, coming into agreement with Worldwide positions on laws governing cannabis and various medicine. https://weedinfrankfurt57923.wikijournalist.com/4927586/about_sweden_weed