Wild plant

I was told not to feed those white wild flowers found in the backyard to guinea pig since they were poisonous. I can't remember the name, I thought it was called daisy. Does anyone know if this is rite? The same goes for feeding silverbeet, they are poisonous.

I'm not sure about either of those but this site has a good list of wild plants that are safe or posioius

www.cavyrescue.co.uk/guin..._guide.htm