Almost all plants have some useful benefits if not just for being pretty.
I don't have Shasta daisy so I asked Mr. Google who said,
Used internally, Daisy can be an effective herbal remedy against cold, cough and digestive complaints. In form of an infusion, Common Daisy is beneficial in cases of arthritis, catarrh, hepatic and renal disorders, diarrhea and rheumatism. Weebly