screening plant/tree ideas needed

[wfrances]

hi all
I am not a gardener, so have no idea what sort of plants would be suitable ,could anyone advise me ?
I need some screening for the bottom of my garden- at the moment we just have a part wall/fence - we would like to grow a row of something to grow taller than the wall/fence to blur out the view behind and add greenery/interest.
its full sun trap, I have no idea what soil I have- sorry
and I have a dog(who doesn't bother with existing plants/trees but might show an interest in something new)
tia

Acacia pravissima. Evergreen, fast growing, pretty yellow flowers in spring. Doesn't like excessively cold exposed northern climes though so depends where you are. If you want trees rather than shrubs make sure you buy 'single stem' specimens.