Particle System is floating in the air and not on the surface I need help, how can I make the grass stick to the surface? There's a lot of options here that if I change it, it moves the grass closer to the floor but smaller the more I reduce it.
The reason why your grass is not where it should be is that the object's origin is way off from the mesh, -30.5 m in X direction, 3.1 m in Y direction and 0.4 m in Z direction. That's the reason why they are not close to the surface or sometimes sinking in, because they are &quot;growing&quot; more than 30 m away from where they are &quot;born&quot;.

To get them distributed correctly you should set the origin close to the bottom of the grass mesh (image below). One way to do it: go to Edit Mode, select the bottom vertices of the grass, Shift+S &gt; Cursor to Selected. Then back into Object Mode, right-click on the grass object, Set Origin &gt; Origin to 3D Cursor.