There's no need to prune tulips while they're in bloom. You deadhead tulip blooms from the stem after the flower is spent, leaving 6–8 inches (15–20 cm) of stem showing above the soil. Prune off the heads of your tulips using gardening shears.

What to do with tulips when they finish flowering?

What to Do With Tulips After They Bloom To Encourage Re-flowering. To encourage your tulips to bloom again next year, remove the seed heads once the blooms have faded. Allow the foliage to die back naturally then dig up the bulbs about 6 weeks after blooming. Discard any damaged or diseased ones and let them dry.

Can I cut back tulips after they have bloomed?

After a week or two, the remaining foliage will die back and slowly turn a yellowish / brown color. As it does, it is then safe to cut the tulips back completely to the ground. This gives the bulbs plenty of time to absorb the nutrients back from the decaying foliage, and gets the bulbs ready for next year' blooms.