The pretty blue flowers of Schlerochiton harveyanus have 2 petals and almost look like half a flower and borne in summer. It makes an attractive container or indoor plant.
Erythrina zeyheri prefers a damp spot where it can develop a huge underground tuber. If planted en masse it makes a beautiful display early in the season.
Freylinia tropica is a very hardy, evergreen, slender shrub. It can be clipped into a formal hedge. It grows in sun or semi-shade. Makes a beautiful container plant.
Carissa macrocarpa has beautiful, scented, white flowers that are followed by edible red fruits almost all year round.It can form a very effective security hedge.