As I was typing the title, I realized that it could be taken differently than what I mean, but that's ok. What I mean is that I have discovered two more plants that cows won't eat. That brings the total to 4 including parsley and calendula. I haven't done any in-depth research to see if these 4 plants have anything in common to ward off being eaten by cows, but if I do, I will certainly let you know!
arrowhead
spurge (euphorbia)
The things I learn by living in the middle of cow pastures paddocks.