Variety traits

Daffodil Double-flowering

Narcissus L.

Double-flowering in daffodils is a qualitative morphological trait that determines a cultivar's placement within a specific horticultural group. This trait is not subject to quantitative measurement and is assessed visually to verify conformity to the cultivar's morphotype.

In the reference 16 varieties crop Daffodil, where this is mentioned in the description.

The formation of double-flowering in daffodils occurs due to the transformation of corona appendages into additional perianth segments, the replacement of the corona with supplementary segments, or the emergence of extra elements within the flower tube. This trait is used exclusively as a classification criterion; therefore, concepts of the degree or intensity of doubleness do not exist in agronomic literature.

During cultivar trials and scientific research, the presence of double-flowering is recorded visually during the period of mass flowering. No specific cultivation standards, distinct from those generally accepted for this crop, are required for double-flowered cultivars: the agrotechnics remain standard and include monitoring planting depth, lighting conditions, and bulb harvesting schedules.

General information about the subject — on the page Double flowering / Reversion.

Sources4

Varieties of Daffodil mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.