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Duration (approx) 2100 hours
Qualification Diploma

Horticultural scientists need a strong knowledge in both horticulture and science.

This diploma level course provides both. 

We always need things to eat, we are always looking at new ways to improve how we grow things. Horticultural scientists are therefore always required.  Improve your job and career prospects AND your knowledge and learn more about horticulture, botany, biochemistry and much more.


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This diploma course prepares you for a career in horticulture and science. 

Improve your knowledge AND your career prospects with this diploma level course.
Useful for careers in - 
  • Nurseries, Farms Allied Horticultural Trades
  • Parks, Gardens, Landscaping, Turf, Tree Management
  • Environmental Management
  • Consulting, Teaching, Media, etc

Horticulture has changed dramatically in recent decades and will no doubt continue to change rapidly; but there will always remain a need for horticulturalists while we continue to eat fruit and vegetables, play sport and use tree planting to improve the environment in which we live.

Horticultural Technicians and Scientists need to have a strong foundation in both horticulture and science. They need to know how to identify lots of different plants, and the botany and chemistry that underpins an understanding of how to grow those plants .

Graduates may find employment as:

  • A consultant
  • A technician
  • A teacher
  • A research assistant.

Whatever is in vogue at different times throughout your career, this course will prepare you to move into and adapt to working in that part of the industry.


Student Comment: "I have found the course to be interesting and challenging, with great learning materials that really make you research the industry and get involved. It has been a great way to study because it has allowed me to work in the industry and study at the same time. I have found the online resources to be fantastic, the tutor's feedback constructive and the fact that assignments can be submitted online makes the process so easy." Tom Wood - Diploma in Horticultural Science.

Tutor Comment: “This fantastic course is for the serious horticulturist with a bent for science. However it also covers the more practical components of horticulture giving you an all round qualification. Opportunities abound for those completing this course – you can work in research, teach, or apply your skills to any industry sector.” - Adriana Fraser Cert.Hort., Cert.Child Care, Adv.Cert.App.Mgt., Cert IV Assessment and Training, Adv.Dip.Hort, ACS Tutor.


You are required to complete six Core Modules looking at horticulture, biochemistry, plant selection and botany.
You then choose 15 Elective Modules from a wide range of topics including biochemistry, landscaping, propagation, turf management and much more.  If you are not sure which options are the best for you, our highly experienced and helpful tutors can help you to make your choices.


You are required to study SIX core modules -


You need to choose FIFTEEN modules from the list given below to complete the diploma.
Other Modules may also be approved.
This course will provide you with an excellent knowledge of horticultural science.  If you want to improve your job and career prospects in this rewarding field, then why not enrol today?
If you are not sure if this is the course for you or you have any questions, then please get in touch.

After You Graduate

In today's rapidly changing world, it is difficult to see the precise opportunities that might exist upon completion of this or any other course.

The one thing that is different here though is that this course offers a stronger focus on science; and given that it is science and technology which is driving so much of the change in today's world; there is little doubt that knowing more science will give you a much stronger foundation to understand changes and opportunities that arise from new technologies that grow out of scientific advances.

Horticulture today is very much an industry that is underpinned by science.

Horticultural businesses are more productive through application of science; and job opportunities have been increasingly dependant upon a good understanding of science.

If you want a future in the horticulture industry; a strong understanding of horticultural science is a huge advantage. 

What Next?

Register to Study - Go to “It’s Easy to Enrol” box at the top of the page and you can enrol now.


Get Advice –  phone us on (UK) 01384 442752 (outside UK +44 (0) 1384 442752) or

Use our FREE COUNSELLING SERVICE to connect with our specialist tutors.

Courses can be started anytime from anywhere in the world!

Towergate Insurance welcomes Professional Liability insurance applications from ACS graduates across all disciplines. Click here for more details.

Meet some of our academics

Maggi BrownMaggi is regarded as an expert in organic growing throughout the UK, having worked for two decades as Education Officer at the world renowned Henry Doubleday Research Association. She has been active in education, environmental management and horticulture across the UK for more than three decades. Some of Maggi's qualifications include RHS Cert. Hort. Cert. Ed. Member RHS Life Member Garden Organic (HDRA) .
Diana Cole (Horticulturist)Horticulturist, Permaculturist, Landscaper, Environmentalist. Holds a Diploma in Horticulture, degree in geography, permaculture certificate and various other qualifications. Between 1985 and 94, Diana was a task leader with the British Trust for Conservation Volunteers. Since 2001 she has been chairperson of the Friends of Mellor Park (with Stockport MDC). From 2005 she has worked exclusively in horticulture as proprietor of her own garden design and consultancy business in and around Derbyshire; and at the same time as part time manager of a small garden centre. Diana has been an enthusiastic and very knowledgeable tutor with ACS since 2008.
Yvonne Sharpe (Horticulturist)Started gardening in 1966, studied a series of horticulture qualifications throughout the 1980's and 90's, culminating in an RHS Master of Horticulture. Between 89 and 1994, she worked teaching in horticultural therapy. Founded the West Herts Garden Association in 1990 and exhibited at Chelsea Flower Show in 1991. In 1994, Yvonne joined the staff at Oaklands College, and between 1996 and 2000 was coordinator for all Amenity Horticulture courses at that college. Since leaving Oakland she has been active as a horticultural consultant, retail garden centre proprietor and sessional lecturer (across many colleges in southern England). In 2000, she also completed a Diploma in Management.

Check out our eBooks

Organic GardeningFor decades farmers have relied upon chemicals to control pests and diseases in order to produce saleable crops. In the ornamental, vegetable and fruit gardens reliance on chemical controls has also been the mainstay for many gardeners.
Climbing PlantsClimbing Plants is an excellent reference for professionals in the landscaping/ gardening industry, for students or for the hobby gardener. Explaining which climbers can be used for specific situations, this ebook is a great starting point using climbing plants in the garden. Topics within this book include Introduction and growing climbers, directory of climbers, how to use climbers, bougainvillea and clematis.
Getting Work in HorticultureExplore what it is like to work in horticulture; how diverse this industry is, how to get a start, and how to build a sustainable, long term and diverse career that keeps your options broad, so you can move from sector to sector as demand and fashion changes across your working life.
Commercial HydroponicsThe Commercial Hydroponics ebook is ideal for students, professional horticulturalists and those who want to build a strong foundation knowledge in hydroponics. The commercial hydroponics ebook explains how to set up a commercial hydroponics system, including growing techniques and equipment that you will need. The topics covered in this book include an introduction to hydroponics, site considerations, alternatives, plant nutrition, nutrient film technique culture, rockwool culture, aggregate culture, other techniques, hydroponics equipment, greenhouse operation, plant culture in hydroponics, Vegetable crops, berry and other fruit crops, flower crops, other crops, managing a commercial hydroponic farm and a troubleshooting guide.