Hedging plants come in a variety of shapes and sizes. There are hedging plants that grow small and rounded, while some grow tall and conical. They can range anywhere in height from only a foot to twenty feet high. The type of hedging plants Sydney landscapers use depends on the results desired. There are a number of uses for hedge plants. They can keep unwanted animals out of a garden, or block an unattractive sight. Hedging plants can mark boundaries, such as property lines, or serve as a wind block. Hedge plants also make wonderful and natural looking privacy shields.