to bloom; when a plant's flowers open.
春になると庭の梅の花が咲く。
When spring comes, the plum blossoms in the garden bloom.
公園の桜並木に花が咲く頃は人で賑わう。
When the cherry trees in the park bloom, the place becomes crowded with people.
温室では一年中いろいろな花が咲く場所もある。
There are greenhouses where various flowers bloom all year round.
to become lively or animated (especially of a conversation); used figuratively as in '話に花が咲く'.
同窓会では昔話に花が咲いて、あっという間に時間が過ぎた。
At the reunion, old stories sparked lively conversation and time flew by.
会議中に意見が次々出て、議論に花が咲いた。
During the meeting, ideas kept coming and the discussion became animated.
ワインの話題でテーブルに花が咲いた。
The table's conversation became lively over the topic of wine.
to flourish or enter a golden age; used figuratively for a culture, industry, or period thriving.
明治期には都市文化が花が咲き、多くの作家が登場した。
In the Meiji era urban culture flourished and many writers emerged.
観光産業に追い風が吹き、町に新たな店ができて花が咲いた。
With a tailwind for tourism, new shops opened in town and it prospered.