Structural Shrubs e.g. Elaeagnus, Viburnum Tinus, Bamboo, Fatsia etc. Generally there is little specific pruning required of many shrubs, especially evergreen structural shrubs other than to remove dead, diseased and crossing branches and unwanted growths. Always remove stems that are growing over or swamping other planting to allow all plants sufficient space to grow in.
If stems become overcrowded they will need to be thinned out, removing approximately one third of all growth. It is advisable to remove unwanted growth back to the point from which it arises on the main branch, or to the ground on thicket forming shrubs such as bamboo and Cornus, rather than shortening shoots back.
Other than this they only need to be pruned cosmetically to suit the size and shape of their situation.
Flowering Shrubs e.g. Ceanothus
The above advice applies to flowering shrubs with the following additions.
As a general guide to pruning it is best to remember that flowering shrubs and climbers should usually be pruned after flowering, therefore early flowering plants should be pruned in early summer and later flowering plants are pruned the following spring.
Generally, remove flowered wood after flowering, encouraging growth of new shoots to flower the following year.
Most plants will not need much structural or formative pruning during the first couple of years until they have grown sufficiently to develop a mature framework of branches. Moreover, plants do not all grow and mature at the same rate and some will need pruning long before others.