- 遍地开花 biàndìkāihuā to blossom everywhereflowers blooming all over the ground
- 开花结果 kāihuājiēguǒ to come to fruitionliterally to blossom and bear fruit; used figuratively to describe seeing positive results from one's efforts or hard work
- 开花期 kāihuāqī flowering seasonThe period from when a plant's first flower bud forms until all the flowers have withered; blooming period or florescence
- 铁树开花 tiěshùkāihuā extremely rare eventsomething highly improbable or extremely rare; an event that is almost impossible to see happen. Literally means "the iron tree (cycad) blooms", referring to how these plants bloom very infrequently outside of their native tropical environment.
- 乐开花 lèkāihuā to burst with joyto be extremely happy; to beam with pleasure; to bloom with happiness
- 墙里开花墙外香 qiánglǐkāihuāqiángwàixiāng famous elsewherethe fragrance of flowers inside the walls is smelled outside; describing a situation where one's accomplishments are easily known outside one's own unit or circle
- 开花植物 kāihuāzhíwù flowering plantPlants that produce flowers and fruits, and reproduce via seeds; also known as [[显花植物|顯花植物|xian3 hua1 zhi2 wu4]] or [[被子植物|被子植物|bei4 zi3 zhi2 wu4]]
- 夜开花 yèkāihuā bottle gourdan edible bottle gourd (Lagenaria siceraria var. hispida) that blooms at night; a common name for the calabash in certain dialects
- 开花衣 kāihuāyī to open a bale of cottonto open or unpack a bale of cotton for processing
- 开花弹 kāihuādàn explosive shellfragmentation bomb or high-explosive shell
- 水仙不开花 shuǐxiānbùkāihuā to play dumba [[歇后语|歇後語|xie1 hou4 yu3]] (two-part allegorical saying) meaning to pretend not to know; specifically meaning [[装蒜|裝蒜|zhuang1 suan4]]. Derived from the fact that a narcissus that has not bloomed looks almost identical to a head of garlic.
- 竹管开花 zhúguǎnkāihuā to flourish in writingto have one's literary talent bloom; a metaphor for a sudden increase in creative writing ability or producing a masterpiece
- 脑袋开花 nǎodaikāihuā to blow one's brains outto be shot in the head; to have one's skull split open
- 树上开花 shùshàngkāihuā to deck a tree with false blossoms(idiom) to decorate a tree with fake flowers, meaning to make something of no value appear valuable; used as a military strategy to create an illusion of strength
- 开花儿 kāihuār to bloomto bloom; to blossom; to flower