If you like a neat garden and don't want more narcissus flowers including daffodils and jonquils, then the answer is easy - off with their heads! By that I mean when a daffodil has finished blooming, it's time to remove the spent bloom so the bulb can save it's energy instead of making seeds. To deadhead daffodils, find the node at the bottom of a fading flower and either using clippers, or your fingers, pop the whole flower off. If you're uncomfortable breaking off the flower, remove the whole stem. Either way, this will re-direct the bulb's attention away from using energy to maintain flowers and seed buds and give you flowers next spring.