- National Garden Scheme www.ngs.org.uk
- Isabel hospice www.isabelhospice.org.uk
- The Garden Gate is Open – Ninety Gardens in 2017
https://thegardengateisopen.blog/ - Piet Oudolf www.oudolf.com
- Daisy Roots Nursery www.daisyroots.com
- Marianne Majerus Garden Images www.mariannemajerus.com
- Welwyn Garden City Horticultural Society www.wgchortsoc.co.uk
- The Hardy Plant Society www.hardy-plant.org.uk
- Succeeding with Monardas www.hardy-plant.org.uk
- The Hertfordshire Group of the Hardy Plant Society www.hertshps.com
- Rustling End Cottage www.rustlingend.com
- Perfect Ground Solutions www.perfectgroundsolutions.co.uk
- Health Benefits of Gardening for Older Adults https://billyoh.com/resource/benefits-of-gardening-older-adults/
Prairie Planting in Welwyn Garden City 