Category: Flowers and Foliages. Description: Celosia is an annual flower plant grown for the showy flowers that may either be a plumed or crested type. The common name cockscomb refers to the crestlike blooms.Colors range from yellow, gold, peach, orange and shades of red.escription: Celosia is an annual flower plant grown for the showy flowers that may either be a plumed or crested type.