Answer : In general, you don't need a license to work as a landscape designer. However, there are some exceptions. If you're working in a state that requires a license for certain aspects of landscape design, such as irrigation or pesticide application, then you'll need to get licensed. There are also a few cities that require landscape designers to be licensed. Typically, to get licensed, you'll need to pass an exam administered by the state or city in which you plan to work.
Landscape design is a growing field, and many designers find that having a license gives them an edge when competing for jobs. A license can also make it easier to start your own landscaping business. If you're thinking about getting licensed, check with