國語辭典有意栽花花不發，無心插柳柳成陰
（諺語）比喻有意圖、有計畫去做的事常無法成功，而無意中的行動卻獲得意外的成效。明．湯顯祖《南柯記．第八齣》：「似蟻人中不可尋，觀音講下遇知音。有意栽花花不發，無心插柳柳成陰。」
英語 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
© 漢典