P.exaltatus is one of the best known as it occurs widely in drier areas. Flowers occur in conical shaped spikes on tall stems. The flowers are pink to purple in colour and the spikes can be up to 150 mm long by 50 mm diameter. Flowering occurs from winter through to summer. This species has been in cultivation for many years but, along with other members of the genus, it has not proven to be particularly reliable.
Soil drainage needs to be excellent.
There is considerable research being undertaken into the cultivation requirements of this genus because of their potential as cut flowers. Propagation is usually carried out from seed which does not require any pretreatment but which may be slow and unreliable in germination. Propagation from cuttings has been successful. You may have reached this description from one of several different sources.