flowers in full bloom; time of year in which flowers are in full bloom
the age at which someone (esp. a woman) is at the peak of their beauty
booming or peaking (in popularity)
今年も桜が花盛りを迎えた。
The cherry blossoms reached full bloom again this year.
花盛りの公園は大勢の人で賑わっている。
The park in full bloom is bustling with many people.
花盛りの時期は一週間ほどしか続かない。
The period of full bloom lasts only about a week.