Hedges can make good garden boundaries and windbreaks. You can choose from formal 'clipped' hedges or informal ones - those that come into flower each year. Hedges take up a lot of space, so be prepared to sacrifice some of the ground alongside the length of the hedge. Remember also that they will compete with other plants for water and nutrients in the soil. You'll need to keep the area underneath the hedge cleaned out to allow air to circulate freely and also to stop unwanted pests using the debris as their winter homes.