State and national licenses and certifications can be obtained through the following. A Landscape Construction Professional License is required to build and install landscapes and irrigation in Oregon, and a Pesticide Applicators License is required to apply pesticides.
- Landscape Construction Professional License, Oregon Landscape Contractors Board
- Ornamental and Turf Pesticide Applicator License, Oregon Department of Agriculture
- Landscape Technician Certification, National Assocation of Landscape Professionals