Despite its tropical origin, tree waratah has been successfully cultivated in cooler districts at least as far south as Sydney where the plant flowers reliably. It is tolerant of a range of soils provided they are not waterlogged. It will even survive extended dry periods once established but flowering is reduced under these conditions. Established plants will withstand moderate frosts but heavy frosts can be expected to cause damage. Propagation may be carried out from seed which is not, however, readily available.
Plants also strike readily from cuttings of hardened new growth.
You may have reached this description from one of several different sources. Thanks to John Wrigley for information about the derivation of the botanical name.