expression, ichidan verb
have a lively conversation; get carried away talking
Idiomatic expression meaning a conversation becomes animated and enjoyable, often with shared enthusiasm. The image is of flowers blooming in the talk.
久しぶりに会った友人と話に花を咲かせた。
I had a lively conversation with a friend I hadn't seen in a long time.
同窓会では昔
At the class reunion, they had a lively conversation about old memories.