What about the law and magic mushrooms/truffles?
In 1993, the sale of magic mushrooms in smart shops started. Following a number of incidents (in which magic mushroom use may have played a role) with foreign tourists in Amsterdam in 2006-2008, Minister Klink of VWS decided to ban the sale of magic mushrooms as of December 1, 2008. Since then, magic mushrooms have come under list 2 of the Opium Act, fresh or dried. This means that possession, import and export, cultivation and sale are prohibited.
All mushrooms with a hallucinogenic effect, both fresh and dried, are on list II of the Opium Act. The active ingredients of magic mushrooms, psilocin and psilocybin, are on list I of the Opium Act. List I includes substances with an unacceptable risk to health. Fresh truffles (Sclerotia) are not included. Grow kits that allow you to grow your own magic mushrooms are also legal.
Check the theme Drugs and the law for more info.