国语辞典有意栽花花不发，无心插柳柳成阴
（谚语）比喻有意图、有计划去做的事常无法成功，而无意中的行动却获得意外的成效。明．汤显祖《南柯记．第八出》：「似蚁人中不可寻，观音讲下遇知音。有意栽花花不发，无心插柳柳成阴。」
英语 lit. you plant a garden and the flowers do not bloom, you poke a stick in the mud and it grows into a tree, fig. things do not always turn out as one would expect, well-laid plans may fail, and success may come where you least expect it
© 汉典