Trees in Rust are important for the players. When you hit a tree with your hatchet or Pick Axe you have a chance to get wood from it which allows you to craft a lot of things to survive. Trees can not be chopped down since they are a static part of the landscape.
Trees give you a very high number of resources on every hit but will "run empty" after harvesting. Trees will also drop low quality metal if you continuously place C4 on the trunk of tree. This method may take as much as 20 minutes if done correctly.