Hedge trimmers are gardening tools designed to shape and maintain hedges and shrubs. They come in various types, including manual shears, electric, and gas-powered models. These tools help gardeners achieve a neat appearance by cutting back overgrown branches and leaves. Using hedge trimmers can enhance the health of plants by promoting growth and preventing disease. Safety features, such as blade guards and ergonomic handles, are important for user protection. Regular maintenance, like cleaning and sharpening blades, ensures optimal performance and longevity of the tool.