Tulip is a perennial herb of Liliaceae Tulip. If the leaves are shaded too much, their leaves will grow white, become slender and look like leeks. But this process is irreversible. Once the leaves of tulips grow into leeks, they can't be changed back into tulips. If you like tulips, you can cultivate another pot.
The above information is for reference only. For more specific conservation methods and techniques, you can also consult the florist.