It is pretty easy to qualify for the LARE in Louisiana. You need to have a degree in landscape architecture and at least 1 year of experience working under the direct supervision of a licensed landscape architect, arborist, or landscape contractor.
After meeting the experience requirements, sign up for the LARE though CLARB. Once you pass all sections of the LARE, you can apply to the State of Louisiana for licensure. You also have to pass a state-specific Louisiana Plant Characteristics section of the LARE which is administered at the same time as the LARE.