In addition to the Hortus Botanicus Foundation (Stichting Hortus Botanicus), which maintains the garden and buildings, there is an organization called the ‘Friends of the Hortus of Amsterdam’. It was founded in 1986, and is closely involved with the everyday developments in the Hortus. This organization is very active, and with more than 8000 members it is the largest Friends society in the Netherlands. At only 35 euros a year, you can be a member too. Your support will help the Foundation and you get to visit the Hortus everyday.