Possible Clues:

• Union insolence — it arises in spring
• National flower of Turkey
• Flower at the center of a financial bubble in the 1630s
• Source of terrible cheek about high-class plant
• Edible flower whose bulb has a toxic core
• Bulb that rarely needs to be replaced
• Flower blooming, nothing less, up on border
• Upset eating middle of mouldy bloomer
• Flower that appears naturally in all colors but pure blue
• Flower cult essentially adopted by crown