Standards and training for STH practitioners website banner

Both Thrive and Trellis have a long history of providing services to support both STH Practitioners and provider organisations.​

  • Trellis provides an information service for practitioners and projects, skills and knowledge sharing events, short training, fieldwork (on-site guidance & support to projects), annual conferences and an International Seminar Series.​
  • Thrive provides formal training and knowledge exchange offering an accredited Diploma and Award in STH alongside CPD and short courses for practitioners, consultancy and delivery of STH programmes from our gardens in Reading, London and Birmingham.​

Trellis and Thrive have committed to working together to create the Professional Body for Social & Therapeutic Horticulture (STH). Practitioners across the sector have been calling for a professional body dedicated to STH and felt that it should be led by Trellis and Thrive as the experts in this field.​

The UK Association for STH will be accredited by the Professional Standards Authority. It will hold a publicly available register of Practitioners who have demonstrated that meet agreed standards and who have committed to continued professional development. ​

Thrive and Trellis are working in collaboration with the STH practitioner community to create the standards, guides, and support processes that the new Association will need; there are over 200 people in the consultative forum. More information can be found here: https://www.trellisscotland.org.uk/professional-development ​

Aim: To inspire and champion excellence in Social & Therapeutic Horticulture (STH) and to grow the STH profession for the benefit of the public’s health and wellbeing


  • Set and uphold professional standards and to maintain a register of ‘approved’ STH practitioners ​
  • Encourage the professional growth of STH practitioners​
  • Encourage people from all backgrounds to train and develop the required skills to become STH practitioners​
  • Represent STH to commissioners, policy-makers and opinion-formers and work to ensure that the wider public understands what STH is, how it can be beneficial and how to access it