Jasmines are to be recommended for bringing fragrance into the garden in the warmer months. They belong to the Oleaceae family of plants and there are more than 200 species of them, native mainly to tropical and warm temperate regions of the world (particularly South and South-East Asia), thus they are quite well suited to our Sydney climate and a number of them thrive here. They have either a climbing or shrubby habit, though some can be grown as either, including the variety Jasminum laurifolium var. laurifolium (ht to 1.2-2m or more) - more usually known by its synonym Jasminum nitidum - from Papua New Guinea. It has flushes of fragrant, clear white blooms that open from purplish buds and have many finely cut petals that are often tinted red-purple on the outside. The flowers remind me of little pinwheels. The glossy leaves are also very attractive. It grows best in a sunny, well-drained position. It can be clipped back after flowering (especially if it is being trained as a shrub) and can be propagated by cuttings taken in spring or autumn.
Postscript: Whilst I love the flowers of this jasmine, in the end I took it out, as I was trying to grow it as a shrub and it just needed too much clipping and never really attained a good shape. I may have had more success growing it as a climber on a support.