The botanical garden manages the following collections on behalf of the National Plant Collection Foundation: pine family (18 genera with 18 species and 22 cultivars), Cryptomeria (1 species and 32 cultivars) and flora from Madagascar. The last collection is housed in the greenhouse complex that was built in 1987. It consists of 34 genera, 252 species and 21 cultivars and is represented by plants from the aloe, Euphorbia and Kalanchoe genera. There are also plants from endemic genera such as Ischnolepis, Folotsia, Seyrigia, Pachypodium, Xerosicyos, Zygosicyos, Alluaudia, Alluaudiopsis, Didierea and Uncarina.
The garden is a member of the Dutch Association of Botanical Gardens and the Museum Association.