Can't see texture image until I render

Hi I’m trying to model a soccer pitch in Blender. I have an image for the soccer
pitch which I have added in the Materials section. However I don’t see the actual
texture until I render (F12).

Is it possible to see the textures of all your objects without rendering?

yes you can-
have you UV mapped it to the object?

then change the 3D view to textured view (the potato looking icon)