What characterizes Division 1 daffodils according to the ADS classification system?

Answer

The cup is as long as or longer than the petals.

Division 1 encompasses Trumpet Daffodils, which are defined by having a central cup (corona) that is equal to or greater in length than the surrounding petals, known as the perianth.

What characterizes Division 1 daffodils according to the ADS classification system?
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