Hebe
These neat, small-growing New Zealand plants are not particularly fussy about conditions, but will always maintain a better profile if they're given a light haircut after flowering.
Citrus
Citrus grafted onto dwarfing rootstocks grow well in pots. Their glossy leaves are green year round, the flowers have a delightful fragrance, and the fruits are decorative. In Asia, potted citrus are given as 'good luck' tokens at New Year.
New Zealand Christmas Bush
Almost unkillable (but no heavy frosts, please) and, if you're lucky, you'll get a good show of red blooms at Christmas. The pretty, variegated form is notoriously reluctant to flower.
Grevillea
There are hundreds of grevillea species around but G. juniperina, G. intricata and G. 'Robyn Gordon' are particularly attractive.
Box
Renowned for their hardiness and their small, neat leaves, box plants are very popular for topiary work. Begin clipping when the plant is young to maintain a dense foliage cover.
This information is from the Yates Garden Guide: fully revised & updated 44th edition, HarperCollins, $39.99. You can have this information and so much more at your fingertips by purchasing the Yates Garden Guide, available at all leading bookstores and Bunnings stores.