Learn everything you need to know about horticulture as you rotate through 10 departments at RHS Garden Wisley
About the diploma
The diploma is made up of two levels (known as Level 3 and Level 4) and can only be studied at RHS Garden Wisley. As part of this two-year course, Level 3 is studied in year one, and Level 4 in year two.
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Applications are now open
Applications for the RHS Level 3 & 4 Diploma are now open. Apply before 1 February 2025 to be considered for a September 2025 place.
Apply Now
Want to know more?
Hear first-hand from our current Diploma students about what’s involved in the two-year programme.
Missed our free virtual event?
If you are a student, graduate, or horticulturist looking to further your horticultural knowledge and career, and you missed our free Virtual RHS Diploma in Horticultural Practice event, you can now watch a recording of the virtual event, to discover more about the work-based RHS Diploma and how to apply.
Watch online
What you will learn and when
RHS Level 3 & 4 Diploma in Horticultural Practice
We teach our RHS Diploma in Horticultural Practice as a two-year course at RHS Garden Wisley.
Year 1 – Level 3
You will learn about the following areas of horticulture:
- Horticultural operations
- Plant care
- Establishment and maintenance
- Horticultural taxonomy
- Botany and plantsmanship
- Horticultural history
- Philosophy and design
- Productive growing propagation
- Soils and growing media
You will have the opportunity to design and tend your own allotment and visit the RHS Chelsea Flower Show.
Year 2 – Level 4
You will study:
Programme of work
Diploma students rotate through 10 departments in the Garden. The course also comprises a detailed lecture and masterclass programme, and students complete various pieces of assessed coursework.
Additional qualifications
Diploma students also complete a number of short practical-based national qualifications, which include:
- FEPA PA1 & PA6aw (pesticides)
- Tractor driving
- Strimming and brush cutting
- Using a hedge trimmer
- Tree assessment course
- Manual handling course
Applications and entry requirements
At application applicants are expected, as a minimum, to hold a Level 2 horticultural theory qualification. This could be a National Certificate in Horticulture, Horticultural Operative Apprenticeship Standard, a Level 2 Diploma in Horticulture such as a City & Guilds RHS Level 2 Certificate in the Principles of Horticulture or RHS Level 2 Certificate in the Principles of Plant Growth and Development. (See our Level 2 qualifications.)
Applicants should have
- GCSE qualifications in English and maths (or equivalents)
- Completed at least six months of practical work experience in a professional horticultural environment
- Experience using basic horticultural machinery, equipment and/or tools
- Enjoy working on own initiative as well as part of a team
- An openness to working with new individuals across the garden on a regular basis
- Experience of working with customers/visitors in a professional environment, and of giving good customer service
- A flexible approach to working (e.g. weekend work will be required on a regular basis, and evening work will be required from time-to-time)
Please note: You must have the right to work in the UK to apply. The RHS is unable to sponsor any visa applications. A good working knowledge of the English language is essential and evidence to that effect will be requested.
Applications are now open
Applications for the RHS Level 3 & 4 Diploma are now open. Apply before 1 February 2025 to be considered for a September 2025 place.
Apply Now
Learner life at RHS Gardens
Training away from home can be daunting but we’re here to help you. We can support you with:
- Getting free access to our amazing libraries
- Accommodation – single en-suite rooms with shared kitchen and lounge facilities, available at RHS Garden Wisley (for a deduction in your gross salary)
- Connecting you with like-minded individuals who are passionate about plants and horticulture
Find out more
Got a question?
Email our dedicated team and they’ll help you get your learning under way.
Email the team
You might also be interested in...
- Learner stories: See what our current and past learners have to say about their training at the RHS – read the stories
- Supporters: Our work-based training programmes are only possible with funding from our supporters – find out about our supporters
- Careers in horticulture: If you’re looking to change careers or just starting out, the world of horticulture has dozens of roles – explore more careers
