- CoursesVisit our website to find out more about our offering, and enrol onto a course.OnlineRHS Level 2 Certificate in the Principles of Garden Planning, Establishment and MaintenanceBook NowOnlineRHS Level 2 Certificate in the Principles of Plant Growth, Propagation and DevelopmentBook NowOnlineRHS Level 3 Certificate in the Principles of Garden Planning, Construction and PlantingBook NowOnlineRHS Level 3 Certificate in the Principles of Plant Growth, Health and Applied PropagationBook NowOnlineCertificate in Organic HorticultureBook NowOnlineSafe Application of Pesticides (Pa1) Foundation ModuleBook Now