QuestionsHow to growFlowersBorder Perennial Flowerscutting back flowers 0 Vote Up Vote Down eddie wiggins asked 15 years ago How far back do you cut long stemmed flowers that have finished flowering? 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 6 years ago If these are just flower stems of tall non-woody flowering plants, the stems can be cut away entirely or as far down as you want. But remember that withered flower stems of many kinds of flowers can look very well in autumn and winter.