Landscape Architect

A landscape architect is someone who holds professional qualifications in general landscape architecture with training in horticulture, landscape design and planning. Using their knowledge of building, civil engineering, planning and the environment, landscape architects can plan an entire site including the location of buildings, public access, roadways, structures and planting. In general, a landscape architect would be used for commercial projects rather than residential or domestic landscaping.

Source:  www.landscaper.org.uk/content/landscaping-faq