Unlike a lot of smaller garden plants, mature trees often do pretty well if they're just left to their own devices. Their large root systems mean they're unlikely to need watering, and when they reach a certain size, they're tough enough to withstand a lot of what nature throws at them. However, it would be a mistake to assume trees are invincible. The problem is that individual branches can begin to die off, while the rest of the tree is left healthy—at first, anyway.
10 July 2017