Wait until the leaves of your tulips turn yellow and dry before you begin deadheading. This ensures that tulip bulbs get the necessary amounts of nourishment before deadheading begins.
Pinch or use flower shears to remove wilted tulip blooms to promote reblooming and reduce the risk of plant diseases. Cut stems right above the ground, above where the long leaves connect to the stem; this encourages new stem growth and additional blooming.
Continue deadheading your tulips until the growing season ends. Allow a few blooms to remain and turn to seed, if you hope to try starting a new crop of tulips from seed. If not, continue to deadhead your tulips throughout the growing season to prolong your enjoyment of the beautiful blooms.