Certificate of Horticulture (RHS)

Course Info

Length: 1 Week

Type: Online

Available Dates


  • Apr-10-2023


  • May-15-2023


  • June-12-2023


  • July-10-2023


  • Aug-14-2023


  • Sep-11-2023


  • Oct-16-2023


  • Nov-13-2023


  • Dec-11-2023


Course Details

Course Outline

5 days course

Introduction to Plants


  • Describe the relevant identifying physical features of flowering ornamental plants.
  • Demonstrate use of references and other resources to gain relevant information for identifying and describing plants. 
  • Dissect, draw and label different flowers.
  • Collect and identify the shapes of different leaves.
  • Demonstrate how to identify between family, genus, species, variety and cultivar.
 Plant Culture


  • Describe how to prune different plants.
  • Demonstrate how to cut wood correctly, on the correct angle and section of the stem.
  • Describe how to plant a plant.
  • Demonstrate an awareness of different irrigation equipment, sprinklers, pumps and turf systems available by listing their comparative advantages and disadvantages.
  • Demonstrate selection of appropriate irrigation systems for a horticulture, explaining why particular systems would be preferred.
  • Define water pressure and flow rate and how to calculate each.
  • Describe regular maintenance of garden tools and equipment.
  • List factors to be considered when comparing types of machinery for use in garden maintenance.
Soils and Plant Nutrition


  • Describe the soil types commonly found in plant culture in terms of texture, structure and water-holding and nutrient holding capacity.
  • Describe methods of improving soil structure, infiltration rate, water holding capacity, drainage and aeration.
  • List elements essential for plant growth.
  • Diagnose the major nutrient deficiencies that occur in ornamental plants and prescribe treatment practices.
  • Describe soil pH and its importance in plant nutrition.
  • Describe how salting occurs and how to minimise its effect.
  • Conduct simple inexpensive tests on different potting mixes and report accordingly.
  • Describe suitable soil mixes for container growing of different types of plants.
  • List a range of both natural and artificial fertilizers.
  • Describe fertilizer programs to be used in different situations with ornamental plants.
Introductory Propagation Techniques


  • Demonstrate propagation different plants by cuttings and seed.
  • Construct a simple inexpensive cold frame.
  • Mix and use a propagation media suited to propagating both seed and cuttings.
  • Describe the method and time of year used to propagate different plant varieties.
  • Describe and demonstrate the steps in preparing and executing a variety of grafts and one budding technique.
  • Explain the reasons why budding or grafting are sometimes preferred propagation methods.
Identification and Use of Plants and pests, diseases


  • Select plants appropriate for growing in different climates.
  • Select plants appropriate to use for shade, windbreaks, as a feature, and for various aesthetic effects.
  • Categorise priorities which effect selection of plants for an ornamental garden.
  • Explain the differences in the way plants perform in different microclimates within the same area.
  • List and analyze the situations where plants are used.
  • Describe the major ways in which diseases (fungal, viral, bacterial and nematode) affect turf, the life cycle features that cause them to become a serious problem to turf culture and the methods available for their control.

Course Video