Two Practical Competence Assessments (PCAs) will each cover three tasks from the syllabus and a plant identification test; these will be undertaken at the relevant BEST centre in spring and summer and assessed by an external RHS examiner and the Centre assessor. The centre does not know the tasks until the PCAs are being prepared.
The tasks are marked according to method and proficiency; the pass mark is 50%, and this element (both PCAs combined) provides 80% of the full assessment. Dates for assessment are arranged by the RHS and the centre at the beginning of the year.
A 75-minute online test (Online Competence Assessment) is taken at home at the end of the course on 19 June 2026. The test is taken in line with RHS exam procedures and consists of multiple choice questions based on 'real world scenarios' of horticultural situations; it is designed to test the application of knowledge. The pass mark is 50% and this provides 20% of the assessment.
Final marks will only be awarded when both parts of the Assessment have been undertaken, but the Qualification will be graded as Pass, Merit or Distinction.
Course delivery:
The course runs over an academic year. There are two cohorts, one at our Ryton Centre near Coventry and the other at North Moreton in Oxfordshire.
Home study for each runs from September - June, with two weeks of practical work and assessment: at our Ryton centre in February and late May, at North Moreton in March and June. The online multiple-choice examination is taken at home in June.
Enrolling on this course involves a commitment to study a programme of seasonal weekly tasks at home, under the direction of your course tutor. This will help you to practice and prepare for two block sessions of practical work at a centre. These are designed to help you improve the techniques you have practised at home (and in your work) and to become proficient ready for assessment by an external RHS examiner at the end of each of the two weeks.
Online resources:
Course notes covering all the topics in the syllabus are downloadable from the online classroom (or available in printed form to purchase separately); these provide the background information for each part of the syllabus which is tested in the final online exam known as an OCA (online competence assessment).
Self-test quizzes in the online classroom will help you check your knowledge.
Narrated presentations in the online classroom cover the key points for each practical topic; there are also videos demonstrating the tasks, which with the Horticultural Standards in each section help you to identify the key points for proficiency and avoid errors in technique.
Plant identification is part of all three assessments (the PCAs and the OCA), and is supported by weekly narrated presentations with self-test quizzes to help you to learn botanical names.
Once a month there will be a plant identification test from a video of live specimens.
Click here to see some sample study materials (please note, with 'guest access' quizzes and interactive elements are not available).
You will be given a structured programme which explains which topics you should work through and what materials you need to cover each week; for seasonality this will run roughly parallel to the weekly taught courses at our centres, but of course you will have leeway to work around local weather conditions and your own commitments. You will have a dedicated online tutor who will monitor your progress and give you encouragement and feedback. There are a series of assessments (not part of your RHS grading, but designed to help you complete the course successfully) which you can upload with pictures of relevant practical work - for example photos of pruning cuts you have made, seed sown in trays or cuttings you have prepared.
Dates for teaching weeks and practical assessments cannot be altered as an RHS Assessor has to be booked at the beginning of the year for the programme.
Ryton centre: Monday 16 - Thursday 19 February, assessment Saturday 21 February; Monday 25 - Thursday 28 May, assessment Saturday 30 May.
North Moreton Centre: Monday 2-Thursday 5 March, assessment Saturday 7 March; Monday 8 - Thursday 11 June, assessment Saturday 13 June.
Monday to Thursday will be days of practical work, designed to perfect your skills, correct any poor techniques and also to give you a chance to practise any tasks which are not easy to cover or resource at home ( e.g. assessing soil using a profile pit and also using pH and EC meters) culminating in a 'mock' , working against the clock under assessment conditions. You will be given plant identification tests each day. On Friday the centre will make preparations with the RHS for your two-hour PCA assessment on the Saturday.
If you fail the plant identification section of a PCA you will be able to retake this online on a date set by the RHS.
If you just fail to reach the pass mark for one or two of the practical tasks, you may be able to retake them on the Sunday following the PCA so please factor this day into your travel plans. If this is not possible you will need to return to our centre on an agreed Saturday or Sunday within one month to retake the tasks.
If you fall below the basic level on any one task, you will need to go to a centre designated by the RHS (usually Sparsholt in Hampshire or Reaseheath in Cheshire) for a complete retake of the PCA with new tasks.
All retakes will incur further RHS exam fees.