blossom

nouns

reproductive organ of angiosperm plants especially one having showy or colorful parts
bloom, blossom, flower
the period of greatest prosperity or productivity
bloom, blossom, efflorescence, flower, flush, heyday, peak, prime

verbs

produce or yield flowers
"The cherry tree bloomed"
bloom, blossom, flower
develop or come to a promising stage
"Youth blossomed into maturity"
blossom, blossom forth, blossom out, unfold