Tulip petals are edible.  Best when picked just before or as they open.  They get tougher with each passing day.  Left, they are used as a garnish in a strawberry sorbet.
Overkill!  Tulip petals are edible.  I like to dip them into something savory...Try recipe section:  Dips.

	Tulip petals with a Dijon, melon, lemon dip.   Puree one cup of musk melon.  Blend three tablespoons of Dijon mustard with one tablespoon of lemon juice.  Blend Dijon with melon.  Salt to taste and place on freshly plucked tulip petals.  Pick petals just before they open so they will be crisp and not bitter.