A theory-based qualification to improve the horticultural knowledge needed for career development to supervisory or management roles, or to further develop your interest.

Entry requirements

Whilst there are no formal prerequisites for entry to the qualification, it is strongly recommended that students who undertake this qualification have obtained the RHS Level 2 Certificate in the Principles of Plant Growth, Propagation and Development or equivalent before they commence on the course.

Course content

  • Plant taxonomy, structure, and function (5 credits)
  • The root environment, plant nutrition and growing systems (5 credits)
  • The management of plant health (3 credits)
  • Understanding applied plant propagation (2 credits)

Course details

Credit value

The qualification has a credit value of 15 (150 learning hours). Credits for a unit will be awarded to a candidate who achieves a mark of 50% or more in the written examination for that unit. Where a candidate achieves a mark of 70% or more in the examination for the unit, the credits for the unit will be awarded with commendation.

Commendation - Where a candidate receives credits with commendation in all four mandatory units, the qualification will be awarded with commendation.


Each unit will be assessed by a separate written examination covering all learning outcomes specified in the unit. Examinations will be offered twice a year in February and June.

Qualification specification

Find out full details about the course

Fees and approved centres

Statement of purpose

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RHS Qualifications
RHS Garden Wisley
GU23 6QB

Tel: 01483 226500

RHS qualifications

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Where can I take RHS exams?
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