Blue agave grown in Mexico, is the name of a plant which is the raw material used to make tequila.
However for an agave spirit any of the hundreds of species of agave grown anywhere in the world may be used. And this will be labelled ‘agave spirit’ not tequila, since it’s not from Mexico and not made from the blue agave species.
Fun fact: Did you know most of the blue agave used to make tequila is grown around a town named tequila in mexico!