- Built in 1967
- Desired temperature: 10 - 25ºC
- Relative humidity: 40%
Arid areas cover a fifth of the earth's surface and have less than 50 cm of rainfall a year and with temperatures fluctuating between -18ºC to 30ºC. All the plants show extraordinary tolerance of dry conditions. Some, such as Agave and Aloe, have fleshy leaves in which water is stored, while others have leaves that are nothing more than spines, this is an adaptation to reduce water loss.
Plants are grouped by desert ecosystem, from North America we have Mojave, Sonoran and Chihuahuan deserts and from Africa the Nama Karoo and Succulent Karoo deserts. Madagascar & Arabia are also represented.
Different stone types are used for each region, making it easy to recognise the zones and plants from each area.