Holly windbreak and cut as hedge on right a

When does a hedge become a windbreak? The attached image illustrates Ilex growing in the Garden. As a windbreak the plants are left to grow, gaining not just height but spread also. An increase in width, annually encroaching into the surrounding planting, if not curtailed will smother out desirable plantings. On a regular cycle these gigantic Holly’s are pruned back ruthlessly, always re-growing to shelter the garden and its collection. As a hedge we cut the Holly once a year, composting the clippings.