Unwin’s dbl and semi-dbl mixed – Dahlia

This catalogue section uses Dahlia pinnata for garden dahlia seed references. Cultivated dahlias include hybrids of mixed parentage, so the label should not be read as a pedigree for every entry. Dahlias are tuberous, frost-sensitive perennials in the Asteraceae; their flower classes distinguish structures such as single, collarette, decorative and cactus forms.