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  1. Dahlia | Description, History, & Facts | Britannica

  2. Dahlia - Wikipedia

  3. How to Grow Dahlias: The Complete Dahlia Flower Guide - The …

  4. Dahlia - Kew

  5. Dahlia Flowers: History, Characteristics and Meaning

  6. Dahlia Flower Types: A Guide to Groups and Classification - Gardener's Path

  7. Dahlia Types Explained - National Garden Bureau

  8. Dahlia: A Guide to Stunning Varieties for Your Garden

  9. Dahlia Types Explained - BBC Gardeners World Magazine

  10. Overview - National Dahlia Society