118. Prohibited conduct and representations. Unless licensed to practice landscape architecture under [this subchapter], no person shall engage, directly or indirectly, in the practice of landscape architecture in the District or use the title 'professional landscape architect,' 'landscape architect,' or 'registered landscape architect' or display or use any words, letters, figures, titles, signs, cards, advertisements, or any other symbols or devices indicating, or tending to indicate, that the person is a landscape architect or is practicing landscape architecture. (Apr. 7, 2017, D.C. Law 21-249, § 2(h), 64 DCR 1629.)
District of Columbia Legal Code