The greenhouse and outdoor collections together hold nearly 25,000 accessions of living plants (about 18,000 taxa and 3,000 genera) which is about 6% of all known plant species of the world. 10,000 of them can be seen in our greenhouses (Plant Palace), the 8,000, comprising cultivated and indigenous plants, grows outdoors.
Well-represented plant groups in our greenhouse collection are: tropical and subtropical crops, mediterranean plants, Rubiaceae, Cactaceae, bromeliads, palms, cycads, agaves, Gesneriaceae, orchids, Araceae, Begoniaceae and succulents.
The Outdoor Collections accommodate taxa from all temperate regions of the world. A major part of them is planted in thematic collections open to the general public. Three systematic collections form the core of these plantings: the Herbetum (herbaceous plants arranged to the systems of Cronquist & Takhtajan), the Fruticetum (woody plants arranged to the system of Dahlgren) and the Coniferetum (gymnosperms arranged by genus). Nearly all hardy or 'half-hardy' genera are represented in these collections.
Another collection type is shown by the genera collections which give a thorough overview of the representatives of species and cultivars in the genera Quercus, Rhododendron, Hydrangea, Acer (Japanese & Chinese), Magnolia. Other developed thematic collections are the medicinal plants garden, the North American forest theme, the Mediterranean plants collection. Rare or unusual tree species and cultivars are dispersed over the lawns and play the role of salt and pepper in the landscape dominated by indigenous tree plantations. Some trees are really champion trees of Belgium and need special attention or care.
Well-represented plant families (on the whole outdoor collections) are Pinaceae (43% of extant species of the world), Aceraceae (42%), Betulaceae (39%), Hydrangeaceae (37%), Caprifoliaceae (33%), Cornaceae (31%), Cupressaceae (20%), Berberidaceae (16%), Ranunculaceae (14%) and Rosaceae (13%).
Are you looking for a specific plant? By searching the living collection database you can find out where in our domain the plant is growing.
In our Garden Shop a plant finder is also available. There you can print a map of the Garden with the plants you want to visit.
Watch out, not all plants are available troughout the year. Sometimes plants die or plant displays change.
Collection policy on invasive plants