In Directional mode, the wind affects the whole Terrain at once.

You can set the Mode to Directional or Spherical. More info See in Glossary for the Wind Zone has a number of settings to control its behavior. The Inspector A Unity window that displays information about the currently selected GameObject, asset or project settings, allowing you to inspect and edit the values. More info See in Glossary > Miscellaneous > Wind Zone). Unity has many built-in components, and you can create your own by writing scripts that inherit from MonoBehaviour. A GameObject can contain any number of components. More info See in Glossary (menu: Component A functional part of a GameObject. In each Scene, you place your environments, obstacles, and decorations, essentially designing and building your game in pieces. Think of each unique Scene file as a unique level. You can add the Wind Zone component to any suitable GameObject already in the Scene A Scene contains the environments and menus of your game. More info See in Glossary > 3D Object A 3D GameObject such as a cube, terrain or ragdoll. A GameObject’s functionality is defined by the Components attached to it. To create a Wind Zone GameObject directly, go to Unity’s top menu and then go to GameObject The fundamental object in Unity scenes, which can represent characters, props, scenery, cameras, waypoints, and more. Trees within a wind zone bend in a realistic animated fashion, and the wind itself moves in pulses to create natural patterns of movement among the trees. More info See in Glossary and Particle Systems, you can add one or more GameObjects with Wind Zone components. A Terrain GameObject adds a large flat plane to your scene and you can use the Terrain’s Inspector window to create a detailed landscape. To create the effect of wind on your Terrain The landscape in your scene.

Unity speedtree