Don't risk it.
Flowers that would be okay are either grown by you
or from the produce department of grocer (sold packed as edible flowers)
They include nasturtium, pansy, hibiscus and rose.
I would not feed any from the florist.
Thanks. It was tempting to put it in the cage but I didn't. I also didn't know they sold edible flowers in the grocery store. I'll have to look for those when I do my grocery shopping this weekend.
Don't know what kind of daisy you have but... http://www.plantsciences.ucdavis.edu/ce/king/PoisPlant/Tox-COM.htm
"Minor Toxicity: Ingestion of these plants may cause minor illnesses such as vomiting or diarrhea. If ingested, call the Poison Control Center or your doctor."