Answer: Tulip flowers naturally only last a little while, then they do fall off. You can snip off the tops of the flower stems (where the petals were attached) to prevent them from wasting energy on setting seeds. Allow the foliage to grow and then turn brown and dry up, then after that happens you can remove it. This process rebuilds the bulb's strength so it can hopefully bloom again next year.
Q&A Library Searching Tips