Answer: The tulip foliage must be allowed to grow to its fullest extent, then fade and die back naturally. This process is what replenishes the bulbs so they can bloom again next year. For this reason, the foliage should be treated well and encouraged to grow, like any other plant. Burying it in mulch prematurely could cause the bulbs to lose strength and not bloom next year. The mulch should be applied around but not over top of the foliage.
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