N.J. Stat. Ann. § 45:3A-1

4. In order to safeguard life, health and property, and promote the public welfare, a person using the title "landscape architect" and engaging in the practice of landscape architecture in this State is required to submit evidence that the person is qualified to be licensed to practice landscape architecture as provided in P.L.1983, c.337 (C.45:3A-1 et al.). It is unlawful for a person not licensed as a landscape architect to use the title "landscape architect" or any other title, sign, card or device in a manner which tends to convey the impression that the person is a licensed landscape architect. Every holder of a license shall display it in a conspicuous place in his principal office, place of business or employment.