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Certificate in Horticulture Online Course

Gain skills and knowledge needed to better understand the growing of plants

Gain Skills And Knowledge Needed To Better Understand The Growing Of Plants

Horticulture is the growing of plants and understanding of the make-up of the soil and the best way to ensure you maximise the ground around you is a skill a lot of us want to know. Our Horticulture course provides the skills and knowledge needed to better understand this complex subject.

Course Fast Facts:

  1. Learn how to become an expert in Horticulture 
  2. Comprehensive 13 module Certificate in Horticulture  Online Course
  3. Study along with simple instructions & demonstrations
  4. Written and developed by leading Horticulture  experts
  5. Receive one-on-one online help & support
  6. Unlimited, lifetime access to online course
  7. Certificate of completion awarded with passing score for the online assessment
  8. Study at your own pace with no rigid class timetables, 24/7 from any computer or smart device

Course Delivery

Courses are accessed online via our learning management system by any device including PC, tablet or Smart Phone. Upon enrolment an automated welcome email will be sent to you (please check your junk email inbox if not received as this is an automated email), in order for you to access your online course, which is Available 24/7 on any computer or smart mobile device. 

Recognition & Accreditation

All students who complete this course, receive a certificate of completion with a passing score (for the online assessment) and will be issued a certificate via email.

Basic Botany

  • Basic Botany
  • Roots
  • Stems
  • Leaves
  • Flowers
  • Diffusion
  • Osmosis
  • Absorption
  • Function of Water
  • Water Stress
  • Photosynthesis
  • Respiration

Plant Classification

  • Classification of Plants or Plant Taxonomy
  • Plant Families
  • Plant Names
  • Genus Name
  • Species Name
  • Subspecies, Varieties and Forms
  • Cultivars
  • Hybrids
  • Group Names (Grex)
  • Botanic Names Versus Common Names
  • Principle of Priority
  • Name Changes
  • Choice, Construction and Spelling of Names
  • Plant Classification

Soil Science

  • How Soil is Formed
  • Kinds of Parent Material
  • Weathering
  • Physical Disintegration
  • Chemical Decomposition
  • Effects of Climate
  • Effects of Land Surface Features
  • Effects of Plant and Animals
  • Effects of Time
  • Composition of Soil
  • Characteristics of Soil
  • Colour
  • Soil Structure
  • Texture
  • How to Improve Soil Structure
  • Chemical Conditions
  • Soil Degradation
  • Types of Soil Degradation
  • Erosion
  • Manmade Causes of Erosion
  • Types of Erosion
  • Control of Soil Erosion
  • Seed Planting Techniques to Counter Erosion
  • Salinity
  • Sources of Salt
  • Control Methods for Salinity
  • Soil Acidification
  • Other Soil Problems
  • Overcoming Chemical Damage
  • Soil Tests
  • Methods of Measuring pH
  • Plant Nutrition

Nutrient Elements

  • Micronutrients
  • Nitrogen
  • Phosphorus
  • Potassium
  • Magnesium
  • Calcium
  • Sulphur
  • Minor Elements
  • Common Deficiencies and Their Symptoms
  • Feeding Plants
  • Inorganic Fertilisers
  • Organic Fertilisers
  • Some Types of Organic Fertilisers
  • Conditions for Making Composting
  • What Can Be Put into Compost
  • Main Reasons for Compost Failing
  • Guidelines for Using Compost

Plant Pests, Diseases and Problems

  • Pests
  • Diseases
  • Insect Characteristics
  • Mouthparts
  • Legs
  • Life Cycle
  • Insect Classification
  • Order of Insects
  • Other Types of Pests
  • Fungal Diseases
  • Life Cycle of a Disease
  • Plant Viruses
  • Detection
  • Control
  • Bacterial Diseases
  • Controlling Pests and Diseases
  • Chemical Control Characteristics
  • Insecticides
  • Fungicides
  • Soil Treatment Controls:
  • Rules for Handling Chemicals
  • Damage to the Environment
  • Main Approaches to Bio-Control
  • Advantages of Bio-Control
  • Disadvantages of Bio-Control
  • Natural Pest and Disease Control
  • To Keep Your Garden Clean
  • Physical Controls
  • Traps
  • Repellent Devices
  • Pest Predators
  • Attracting Predators and Parasites
  • Foliage Burn
  • Drainage Problems
  • Frost
  • Hail
  • Shade
  • Temperature
  • Wind
  • Salt
  • Organic Gardening
  • What is Organic Gardening
  • Mycorrhizae
  • Types of Mycorrhizae
  • Earthworms


  • Main Methods of Weed Control
  • Advantages of Hand Weeding
  • Disadvantages of Hand Weeding
  • Mechanical Weeding
  • Advantages of Mechanical Weeding
  • Disadvantages of Mechanical Weeding
  • Chemical Weed Control
  • Advantages of Chemical Control
  • Disadvantages of Chemical Control
  • Shrub Management
  • Other Control Methods
  • Herbicide and Safety Measures

Basic Propagation

  • Introduction
  • Sexual Propagation
  • Hybrid Seed
  • Naturally Occurring Seed
  • Types of Seeds
  • Dormancy Factors Affecting Germination
  • Pre-germination Treatments
  • Seed-sowing Mixes must Provide:
  • Commonly Used Mixtures
  • Seed Boxes and Seed Beds
  • Preparing Seed Boxes and Trays
  • Preparing Seed Beds
  • How To Sow Seed
  • Thinning Seedlings
  • Transplanting
  • Storing Seed
  • Factors Affecting the Storage of Seed
  • Ways of Storing Seed
  • Asexual Propagation
  • Cuttings
  • Types of Cuttings
  • Cutting Treatments
  • Other Treatments
  • Grafting
  • Reasons for Budding and Grafting
  • How a Graft Forms
  • Factors Influencing the Healing of a Graft
  • What Can Be Grafted Onto What
  • Types of Grafts
  • Layering
  • Types of Layering
  • Separation and Division
  • Tissue Culture
  • Uses of Tissue Culture
  • Problems with Tissue Culture

Amenity Horticulture, Plant Groups and Families

  • Introduction
  • Plant Groups
  • Subgroups
  • Important Plant Families
  • Plants in amenity horticulture are usually chosen for the following reasons:
  • Selection Considerations
  • Environmental Influences on Plant Selection
  • Environmental Factors that Affect Plants
  • Before selecting plants inspect them carefully taking note of the following
  • Shrubs
  • Shrubs can be used for Amenity Horticulture in the following ways
  • Trees
  • Why Plant Trees
  • Problems

Planting and Plant Care

  • Planting
  • Basic Planting Procedures for Containerised Plants
  • Planting Procedure for Bare-Rooted Plants
  • Pre-Planting Fertiliser
  • Transplanting Established Plants
  • Staking
  • Time of Planting
  • Ideas
  • After Care for Newly Planted Plants
  • General Plant Care
  • Watering
  • Feeding
  • Foliar Feeding
  • When To Feed With Fertilisers
  • Using Organic Materials
  • Protecting From Pests and Diseases
  • Pruning
  • Removing Dead or Diseased Wood
  • Controlling the Type of Growth
  • Controlling Shape and Size
  • Pollarding
  • Rejuvenating
  • Basic Rules of Pruning
  • Time of Pruning
  • Cutting Back Herbaceous Plants
  • Pinching Back
  • Dead Heading
  • Plant Wounds Occur in Different Ways
  • Keeping Trees Healthy

Plant Notes and Indigenous Plants

  • Introduction
  • Factors Influencing Plant Growth
  • Plant Origins
  • Indigenous Pla nts in Britain
  • Important Indigenous Plants
  • The Value of Indigenous Plants

Exotic Plants

  • Introduction
  • Origins of Common Exotic Garden Pants
  • Popular Garden Plants
  • Rose Groups
  • Rose Terminology
  • Conifers
  • Bulbs
  • Ferns
  • Palms

Indoor Plants

  • Conditions in Inside Environment differ from Outdoors
  • Light
  • Temperature
  • Humidity
  • Methods of Maintaining Humidity
  • Important Plant Care
  • Notes on Indoor Plants
  • Types Container Materials


  • Introduction
  • Lawns and the Environment
  • Lawn Shapes and Design
  • Lawn and Garden Edges
  • Using Edges to the Best Effect
  • Types of Lawn Grasses
  • Common Couch or Kweek [Cynodon dactylon
  • Kikuyu [Pennisetum clandestinum]
  • Buffalo [Stenotaphrum secundum]
  • Chewing Fescue [Festuca rubra var. comutata]
  • L. M Grass [Dactyloctenium australe]
  • Browntop Bent [Agrostis tenuis]
  • Kentucky Blue Grass [Poa pratense]
  • Perennial Ryegrass [Lolium perenne]
  • Ways to Establish a Lawn
  • Preparing the Ground
  • How To Sow Lawn Seed
  • How To Lay Instant Lawn
  • How To Plants Runners
  • How To Plant Plugs
  • Watering Established Lawns
  • Feeding Established Lawns
  • Mowing
  • Lawn Care Techniques
  • Lawn Problems

Entry requirements

Students must have basic literacy and numeracy skills.

Open entry

Previous schooling and academic achievements are not required for entry into this course.

Computer requirements

Students will need access to a computer and the internet.

Minimum specifications for the computer are:


  • Microsoft Windows XP, or later
  • Modern and up to date Browser (Internet Explorer 8 or later, Firefox, Chrome, Safari)


  • OSX/iOS 6 or later
  • Modern and up to date Browser (Firefox, Chrome, Safari)

All systems

  • Internet bandwidth of 1Mb or faster
  • Flash player or a browser with HTML5 video capabilities(Currently Internet Explorer 9, Firefox, Chrome, Safari)

Students will also need access the following applications:

  • Adobe Acrobat Reader 
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Course Summary

Course ID No.: 009OAHD
Delivery Mode: Online
Course Access: Unlimited lifetime
Tutor Support: Yes
Time required: Study at your own pace
Assessments: Yes
Qualification: Certificate