As verbs the difference between flower and flowered

is that flower is to put forth blooms while flowered is (flower).

As a noun flower

is a colorful, conspicuous structure associated with angiosperms, frequently scented and attracting various insects, and which may or may not be used for sexual reproduction or flower can be something that flows, such as a river.

As an adjective flowered is

(of a plant) that has produced flowers.