Cosmos atrosanguineus
Carnation.
crocus
Cuckoo Flower
Cardinal flower
A word to describe you starting with the letter c is cute.
califlower
carnation
C: Orchid
choice
Cork is a plant. Corn is a plant. There is a cone flower.
Countdown and commencement are synonyms for starting. They begin with the letter c.
In crosswords, the 4-letter Easter flower is almost always "lily." Make sure the "c" is correct.