| Useful links |
| Hardy Plant Society (HPS) | http://www.hardy-plant.org.uk/ | The HPS exists to educate, inform and entertain plant and garden lovers everywhere. |
| National Council for the Conservation of Plants and Gardens (NCCPG) | http://www.nccpg.com/ | The NCCPG seeks to conserve the diversity of garden plants in the British Isles and is responsible for the National Plant Collections scheme. |
| Henry Doubleday Research Association (HDRA) | http://www.hdra.org.uk/ | HDRA is a charity which researches and promotes organic gardening, farming and food. |
| The Organic Gardening Catalogue | http://www.organiccatalog.com/catalog/ | The catalogue for organic and environmentally friendly gardeners. Supports the work of the HDRA |
| Royal Horticultural Society (RHS) | http://www.rhs.org.uk/ | The RHS is the UK's leading garden charity dedicated to advancing horticulture and promoting good gardening. |
| RHS Plant Selector. | http://www.rhs.org.uk/rhsplantselector/index.aspx | The Plant Selector database provides access to descriptions, photographs, cultivation information and advice. |
| The National Gardens Scheme (NGS) | http://www.ngs.org.uk/yellow_book.htm | The NGS Scheme organises the opening of gardens to the public for charity. The NGS publishes County and National Yellow Book guides. |
| Complete Gardens | http://www.complete-gardens.co.uk/ | Garden plant finder and gardening software |