The species of the genus Haworthia are closely related to the Aloes. And to the Gasterias. They can be crossed with the species from both genera. These hybrids are called × gasteraloe or × gasterhaworthia.
Haworthia cooperi originates from South Africa and is suitable for all-year-round warm, sunny to semi-shady locations. The substrate should be well-drained and allowed to dry out between waterings.