A horticulturist is a plant science professional with formal training in the cultivation, propagation and management of plants. Unlike a garden designer who primarily focuses on layout and aesthetics, a horticulturist brings deep knowledge of plant physiology, soil science, pest and disease management and cultivation. Chartered Horticulturist (ChHort) status via the Royal Horticultural Society or Institute of Horticulture indicates the highest level of professional recognition.
What they do
- Design specialist and complex planting schemes
- Advise on soil improvement, amendment and preparation
- Manage specialist or rare plant collections
- Restore historic gardens using period-appropriate plants
- Write horticultural management plans for estates
- Specify green roofs and living wall planting
- Diagnose plant health problems and pests
- Advise on horticultural matters for planning applications
When you need one
A horticulturist is most valuable for projects where specialist plant knowledge goes beyond what a garden designer can offer.
Typical costs (UK, 2025)
| Job type | Typical cost |
|---|---|
| Garden consultation and report | £400 - £900 |
| Planting scheme design | £600 - £2,000 |
| Soil analysis and improvement plan | £300 - £700 |
| Horticultural management plan | £500 - £1,500 |
| Species selection for specialist conditions | £300 - £800 |
| Hourly rate | £50 - £90 / hr |
Fees vary by specialism and level of qualification. A Chartered Horticulturist working on a major historic restoration will charge towards the upper end. Always agree the scope and deliverables in writing before work begins.
Qualifications to look for
The highest professional recognition in horticulture in the UK. Awarded by the Royal Horticultural Society or the Institute of Horticulture following peer-assessed submission of competence and experience. Look for ChHort designation for complex or high-value projects.
Demonstrates substantial horticultural knowledge beyond entry level. The RHS Level 3 Diploma in particular covers a wide range of plant science, soil science and cultivation topics. Check at rhs.org.uk/qualifications.
How to find a reputable horticulturist
Frequently asked questions
What is the difference between a horticulturist and a gardener?
A horticulturist has formal education in plant science and may hold an RHS Level 3 qualification or a relevant degree. A gardener is a practitioner focused on maintenance. A horticulturist brings specialist knowledge of plant health, soil science, propagation and cultivation techniques that a general gardener typically does not possess.
What RHS qualifications should I look for?
RHS Level 2 Certificate is entry-level. RHS Level 3 Certificate or Diploma demonstrates substantial horticultural knowledge. A Chartered Horticulturist (ChHort) designation via the Royal Horticultural Society or Institute of Horticulture represents the professional apex and indicates peer-assessed competence and professional standing.
When does a project need a horticulturist rather than a garden designer?
Complex projects involving rare or difficult plants, historic garden restoration, specialist growing conditions (acid soils, exposed sites, waterlogged ground) or the management of established collections benefit from a horticulturist's deeper plant science knowledge. For a standard residential garden redesign, a garden designer is usually sufficient.