The deer resistant daffodil flower includes a perianth and a corona. The perianth consists of six floral leaves comprised of three sepals in the outer whorl and three petals in the inner whorl. The corona or cup is the trumpet shaped outgrowth arising from the inner surface of the perianth.

The American Daffodil Society describes thirteen divisions and six color codes for the daffodil. The division is mentioned first, followed by the appropriate color code for the perianth then the corona.

Divisions: 1-Trumpet, 2-Long Cup, 3-Short Cup, 4-Double, 5-Triandrus, 6-Cyclamineus, 7-Jonquilla, 8-Tazetta, 9-Poeticus, 10-Bulbocodium Hybrids, 11-Split Corona, 12-Other Cultivars, 13-Species. Colors: G-green, O-orange, P-pink, R-red, W-white, and Y-yellow.