I thought i read some where they could be used in a recipe to make a tea... maybe that was only yellow
"The yellow flowers, are good for cooking Tea!
Get them with some water in a cooking pot on a fireplace and you get goldentea, Its similar to Honey, it gives back muuuuch stamina, and fills your thirst nearly full. very good one."I have taken some
white flowers to try and give them to a female zombie, to try to make peace, but they just slap me in the face