Living fences are similar to hedges in function, and the distinction between them is somewhat arbitrary. However, in living fences trees typically are: managed less intensively (ex., cut less often), planted further apart, and the tree is used together with other materials (barbed wire, wooden slats, etc.) to form the barrier. Often trees in living fences are allowed to grow to larger sizes than with hedges. NFT genera of particular importance as living fences include: Erythrina and Gliricidia which can serve as fences and sources of fuelwood and fodder.