Do you have to take up tulips once they finished flowering? I have a raised bed which I have to use for daffodils and tulips, then my perennials. I had a great display of daffodils, then tulips and now waiting for the leaves on both to turn yellow to put in my perennials. I am hoping that I can leave both my daffodils and tulips in the ground to save time next year. Is this not the case?