In the Greenhouses there are more than 4,000 species in an area of 1,500 m2. One is the Eastern Island Tree.
In the Tropical house many plants used by man grow, such as Coffee, Cardamom and Ginger. You may also find the giant Aristolochia, also called Calico Flower and pictured to the left, as well as the carnivorious Monkey Cup and various palms.
The Orchid collection consisting of 1,600 species, is situated in four houses, with various climates. The majority of the collection are epiphytes, i.e. growing upon another plant without feeding from it. The orchids are in full bloom in March and April with a second, less spectacular flowering period during September and October.
The rare terrestrial orchid Disa uniflora blooms in July-August, and the Vanilla starts flowering a little earlier, while the Masdevallia and Dracula species bloom almost all year round. You may also acquaint yourself with the delicate insect-eating plants in the Orchid houses.
The Begonias share their house with a.o. subtropical utility plants, Spanish Moss, Waxplants and the epiphytic Staghorn fern. The flowering is most abundant in autumn but some Begonia species bloom throughout the year.
Not only do cacti grow in the Cactus house, but also other succulents such as Agave and Aloe species and the South African "living stones" which are very difficult to cultivate.
Southern Hemispere house
The Southern Hemispere house contains an Australian brushwood with acacias, eucalyptus and other members of the myrtle family, as well as the marvellous grass-tree (Xanthorrhoea) and Protea plants. Southern African species of Pelargonium and heath (Erica species) also grow here.
The two Mountain houses have alpines from arid and humid areas, respectively. In the dry section there are plants from the Mediterranean region and South West Asia, but also the above mentioned Eastern Island Tree. Those most difficult to cultivate are planted in travertine and are actually growing out of stone! So is the case with the cushion-forming Dionysia species from Iran and Afghanistan. In the humid section, tender rhododendrons thrive along with wild species of camellia.