Anything that is healthy, grows. Gardens that grow require maintenance, and this typically involves pruning, shaping, and hedging. Trees can be great visual screening barriers between harsh structural built forms, and to create privacy between windows. Hedges can very quickly creep into driveway and footpath circulation spaces, and or around swimming pools. Ultimately, pruning work should provide you with an aesthetic result. Sometimes, depending on the tree species and its health, the immediate pruning work can look rough and sharp, but setting a benchmark size and shape is often important, and the tree, shrub or hedge will send out new growth from the point established.