Please click on the links below to reference International Daffodil Organizations;
- Association for the safeguard and promotion of daffodils on the Riviera
- The Daffodil Society, Great Britain
- Coughton Court Daffodils
- Coughton Court Daffodils and The Throckmortons
- Daffodil Association of New South Wales/ACT
- Horticultural Taxonomy Group
- Hortus Bulborum Historic Bulbs, the Netherlands
- Lincolnshire Daffodil Society, UK
- Le Jardin de Berchigranges, France
- National Daffodil Association of Australia
- National Daffodil Society of New Zealand
- The Northern Group of The Daffodil Society
- Northern Ireland Daffodil Group
- Royal Botanic Garden Kew
- Royal Horticultural Society
- RHS Daffodil Registration
- RHS AGM Awards for Daffodils
- RHS International Daffodil Register & Classified List (Daffodil Query)
- RHS Application Form to Register a Daffodil
- RHS International Daffodil Register & Classified List – Annual Supplements
- RHS Botanical Classification
- Botanical Names in the genus Narcissus
- The Tasmanian Daffodil Council
- Scottish Rock Garden Club
- Ukraine – Valley of the Narcissi
- Victorian Daffodil Society of Australia