Iris is a flower that starts with an I
IrisImpatiensIpomoeaIxia
Ina
If you mean "U", there are 0 flowers that start with "U".
orchid
Aspidistra.
Runuculus
rose
Tagetes.
violet
Some flowers that start with the letter "P" include peonies, pansies, poppies, and petunias.
Jasmine and Jupiter's beard are flowers.
blue bonnet