The tubular flowers occur in spring and are usually deep red in colour but yellow and white coloured forms are also known. The flowers are very conspicuous making a very spectacular display. P.aspalathoides is best suited to dry climates and can be short lived in areas with humid summers. It prefers a well drained position and will tolerate full sun as well as partial shade. Prostantheras respond to well to annual fertilising after flowering and are not as sensitive as some other Australian plants to phosphorus.
Propagation is easy from cuttings but seed can be slow to germinate.
It can also be grafted using one of hardier mint bushes such as P.nivea as rootstock. Westringia fruticosa , P.aspalathoides is not compatible with that species. You may have reached this description from one of several different sources.