Factsheet

Diplomas with the RHS

The RHS Level 3 and Level 4 Diploma is a two year work based qualification, designed to give a broad overview of the theory, practice and management of horticulture. RHS diploma students work at RHS Garden Wisley, alongside studying the theory of horticulture through eight different modules per year.

  • Applications open early December to start the following September
  • Great starting point to kick-start a successful career
  • Work alongside our garden experts and grow your confidence, skills and knowledge
  • Gain real-life work experience and increase your  chances of securing employment

Year 1 – Level 3

Course content 
The course is made up of eight compulsory modules per year, supported by further, non- assessed training to enhance experiences and to develop additional skills. In the first year students study the Level 3 Diploma in Horticultural Practice, moving on to Level 4 in year 2.
Induction
An introduction to the garden and to the course itself. Students become acquainted with staff and how the course is structured. Academic work is introduced with support on producing quality coursework and managing time effectively. (not assessed)
Horticultural Taxonomy, Botany and Plantsmanship (part 1)
This is an introduction to the structure and classification of plants, and the tools employed in defining and ordering the plant kingdom. This module teaches the knowledge and skills involved in successful plant identification and helps understanding of the underlying taxonomic systems.
Horticultural History, Philosophy and Design
Those who work in historical gardens must have an understanding of the context of the place. This component looks at the history of garden design and plant collections, before covering the function which horticulture now fulfils in society. The module will then look at garden design and design principles, and the possible future directions in which horticulture may evolve.
Horticultural operations
This covers core skills required to successfully operate in a garden situation. The main subjects covered are plant collections management, turf care, tree management, hazard identification and risk assessment.
Plant health (part 1)
Intended to inform about the current issues in plant health and to equip students with the tools needed to facilitate integrated approaches to pest management. Subjects will include pest and disease identification, pest lifecycles, monitoring, prevention, control and phytosanitary concerns.
Plant care and establishment
Running throughout the year, Plant Care and Establishment gives a thorough overview of the skills required to successfully care for plants in different settings. It covers plant selection, methods of establishment as well as management of different styles of planting including weed control, pruning and seasonal clearance.
Productive growing
This module provides an overview of growing edible crops including annual and perennial vegetables, soft fruit and top fruit. The growing cycle from propagation to harvest is covered, as well as maintenance, pest and disease control and how to maintain productivity.
Propagation
An introduction to and overview of the theory and practice of horticultural propagation necessary for work in an ornamental garden. The theoretical basis of different types of plant propagation are covered, including sexual and vegetative methods. Methods will be demonstrated and put into practice to allow learners to gain a thorough understanding of the methods available.
Soils and growing media
An in-depth look at the root zone to inform on how to keep plants happy and healthy. Students learn about different soil types and structures, and how to accurately analyse these for the most informative results. Soil amelioration for different purposes is covered, as well as a look at growing media and associated environmental concerns.
Additional skills
Students are trained in a suite of skills including communication, presentation and professionalism, designed to ensure excellent competencies when going out into the workplace (not assessed).

Year 2 – Level 4
Horticultural management
Students can learn the core skills required to successfully manage a garden throughout the year. This module covers business practices, people management, health and safety, the environment and various further skills increasingly necessary for the successful running of a public garden.
Ornamental planting
This looks at different styles of ornamental planting and the issues associated with each. Students will look how to design planting schemes with good plantsmanship in mind, and how to best maintain areas with different planting styles.
Horticultural taxonomy, botany and plantsmanship (part 2)
Providing further knowledge of horticultural taxonomy and botany, it encompassing a more in-depth look at plant families including phenotypes and genetics. The module will also look at the problems of invasive alien species, and the purpose and future of herbariums and seed banks.
Research project
This is an opportunity for student centred learning on an approved subject of personal choice. Critical thought, interpretation and analysis are required.
Plant health (part 2)
Further study on plant health and the current issues facing horticulture will be provided in this module. The component covers biosecurity, risk analysis, integrated pest management, and phytosanitary concerns.
Garden design
A look at garden design and project management. This includes design knowledge and awareness, drawing skills, budgeting and spatial management.
Landscape construction
Concentrating on the skills needed to implement new planting schemes and designs,  students will undertake initial site surveys, as well landscape detailing, hard landscaping knowledge and skills.
Propagation and protected growing environments
Further propagation techniques will be explored, along with a look at growing plants under glass, including technology and specimen management.
Additional skills
Students are trained in a suite of skills including communication, presentation and professionalism, designed to ensure excellent competencies when going out into the workplace (not assessed).
 

Frequently asked questions

Is the Diploma full-time?
Diploma Students are employed by the RHS on a full-time basis (37.5 hours a week on a rota), on a two year (fixed term) contract. The working pattern is 5 days in 7 so your full-time hours will include some weekend working.
Is accommodation available?
Diploma students have shared, self-catering accommodation available in Wisley village. This consists of shared housing of between two to five people. Each student has a single study bedroom and access to a shared lounge and kitchen/dining facilities. The cost of RHS accommodation is deducted from remuneration.
Who can apply?
The RHS is an inclusive employer and welcomes applicants from all backgrounds. Anyone can apply
as long as you meet the above entry requirements and have the right to work in the UK. A good working
knowledge of English is essential and evidence will be requested.
What can I do after I have completed The L3 & L4 Diploma in Horticultural Practice?
After achieving the Diploma in Horticultural Practice, you will be equipped with the confidence, skills and theoretical and practical knowledge to further yourself in the industry and within your chosen field.
What does the Diploma programme entail?
Diploma students rotate through a range of departments in the Garden. The course also comprises a detailed lecture and masterclass programme, and students complete various pieces of assessed coursework.
What are the methods of assessment?

Learning takes place within garden placements and through a formal lecture series at RHS Wisley. Tutors are experts in their field and use the garden’s significant resources in hands-on teaching sessions. Assessments are carried out in a variety of ways to allow everyone’s skills to shine. Both practical and academic skills contribute to the Diploma.

Assessments include:
• Work based report
• Essays and reports
• Identification tests
• Planting scheme
• Practical Assessments
• Skills journals
• Survey and garden design
What are the entry requirements?
Before starting on the course you will need:
  • A completed Level 2 horticultural theory qualification (at Certificate, Diploma or Apprenticeship Standard level) or equivalent
  • Six month’s full time practical work experience in a horticultural environment
  • Enthusiasm to learn more about the science and art of horticulture

Get involved

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.