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Certificate in the Principles of Plant Growth, Health & Applied Propagation

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RHS Level 3 Certificate in the Principles of Plant Growth, Health and Applied Propagation

This qualification provides a route to employment in professional horticulture by assessing knowledge of the scientific principles underpinning horticultural practices, and supports career development for those already working in the profession. It also provides a foundation for further learning or training in the field of horticulture.

Download Level 3 Certificate in the Principles of Plant Growth, Health and Applied Propagation (245kB pdf)

Course content

The qualification has a credit value of 15. This equates to 150 learning hours. Learning time is defined as the time taken by learners at the level of the qualification, on average, to complete the learning outcomes of the units to the standard determined by the assessment criteria.

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.

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


  • 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)

Entry Requirements

Whilst there are no formal pre-requisites 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.


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.

Enquiries about results (post-results services)

If candidates have any concerns or are disappointed with their results they should speak to their tutor or centre examinations officer in the first instance. Tutors are able to explain what was achieved and if the results are as expected. The exams officer will be able to make an enquiry about results if the candidate or tutor wishes to take the query further.

This will involve a re-mark by an independent marker and the production of a feedback report. If a re-mark results in an upgrade of the grade from a fail to pass or pass to pass with commendation the fee paid will be refunded.

The enquiry about results service is available once the results have been released on the RHS Web portal. This service will be available for 28 days following the date that the results were released. Requests received after the closing dates will not be accepted.

The fee for the enquiry about results service can be found on the RHS Qualifications and Credit Framework Fees Notice.

Please note this service is available for theory qualifications only.

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Qualification leaflets

Further information

RHS Qualifications
RHS Garden Wisley
GU23 6QB
Tel: 01483 226500