Cannot insert or see models even though gazebo_model_path is set

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I am having issues inserting custom models into gazebo. Here is my file structure:

• lawnbot_ws
  • src
    • lawnbot_desription
      • models
        • grassplane
          • meshes
          • model.sdf and model.config
      • package.xml

Gazebo shows: /home/josiah/PycharmProjects/lawnbot_ws/src/lawnbot_description/models in the insert tab, however it does not show a drop down for actually inserting the grassplane model!

I also have the following line inserted in the package.xml file of the lawnbot_description package: <export> <gazebo_ros gazebo_plugin_path="${prefix}/lib" gazebo_model_path="${prefix}/models"/> </export>

I do not understand what is wrong. I am calling:

roslaunch gazebo_ros empty_world.launch extra_gazebo_args:="--verbose"

in the terminal and the gazebo_model_path shows: /home/josiah/PycharmProjects/lawnbot_ws/src/lawnbot_description/models