Professional education in landscape architecture can be obtained at the undergraduate or graduate level. There are two undergraduate professional degrees: a Bachelor of Landscape Architecture and a Bachelor of Science in Landscape Architecture. These usually require four or five years of study in design, construction techniques, art, history, natural and social sciences.
Although architects may be employed by a private or public firm, they are given a task to complete and are their own bosses as far as how they complete them.
The work environment is mostly office work in a private home office or company firm, not a lot of hands on work although you may have to visit the job site to survey the land.
The American Society of Landscape Architects is the professional organization representing landscape architecture in the United States. The purpose of the society is "the advancement of knowledge, education, and skill in the arts and science of landscape architecture as an instrument of service in the public welfare." ASLA provides continuing professional education to practitioners to maintain their educational licensing requirements where they're needed.