Cloud forests often have mosses covering the ground and vegetation. Such mossy forests usually develop on the saddles of mountains, where moisture from clouds is held in place.
Their altitude varies from 500 m to 4000 m above sea level. Often there is a particular altitude where the environment is suitable for cloud forest. This has fog at the vegetation level, reducing direct sunlight and loss of the watery mist. Much of the moisture to plants arrives by fog drip, where fog condenses on tree leaves and then drips onto the ground below.