Sian Tyrrell

Sian oversees the curation, interpretation, use and communication of RHS horticultural knowledge and information. She ensures the plant information in the RHS horticultural database is accurate and manages how the plant data is collected, stored and used across the Society

What do you do?

I’m working to maintain, strengthen and protect the RHS’s horticultural information – for current and future generations.
I oversee the interpretation of our horticultural data across the society. I lead on sharing plant information and gardening advice online and support my team as they answer 110,000 gardening enquiries every year through the RHS Gardening Advice Service.
To help the RHS share our gardening knowledge more widely, I’m leading the Science & Collections Technology Programme, which is improving our digital presence, our online information and the functionality of our horticultural database.

Contact me for anything to do with the RHS Gardening Advice Service, our online gardening and plant information and all other plant data including the RHS Plant Finder and plant records.

“I get information about plants and gardening to the people that need it.”

Why is your team’s research important?

Scientific research can be difficult for non-scientists to implement at home; that’s where my team is crucial. Its interpretation of our research is helping gardeners across the UK and the world understand research and what it means for them.

Projects I’m working on now

  • Science and Collections Technology Programme

Completed projects


Developing the RHS’s first ever horticultural information plan is one of my biggest achievements. It’s still a work in progress, but has already made a significant difference to customer service and information sharing.


Get involved

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.