开花

[ noun ]
the time and process of budding and unfolding of blossoms
<noun.process>

Blossom \Blos"som\, v. i. [imp. & p. p. {Blossomed}; p. pr. &
vb. n. {Blossoming}.] [AS. bl?stmian. See {Blossom}, n.]
1. To put forth blossoms or flowers; to bloom; to blow; to
flower.

The moving whisper of huge trees that branched
And blossomed. --Tennyson.

2. To flourish and prosper; to develop into a superior type.

Israel shall blossom and bud, and full the face of
the world with fruit. --Isa. xxvii.
6.

3. to appear or grow as if by blossoming; to spread out
rapidly.
[PJC]

blossoming \blossoming\ n.
the process of budding and unfolding of blossoms.

Syn: flowering, inflorescence, anthesis, efflorescence.
[WordNet 1.5]