An estimated 40,000 – 60,000 Finns have tried growing cannabis at home. The number of active home growers in Finland is about ten thousand, but they have many friends. On in five Finns under the age of 35 say that they know at least one home grower. The estimates are from a study which is being published in Yhteiskuntapolitiikka, the publication of the National Institute for Health and Welfare (THL).