Some of my overgrown old hedges that bordered the shrubbery part of the garden where full of both types of laurel, which had made trees over 20 ft high and wider across, and their branches hung right down into the orchard. I was worried about them, but at the time just couldnt get anything done, after a few years of keeping sheep and cattle without problems, when I got a couple of ponies, I had more or less forgotten about it being a potential problem.
They all used the orchard for several years without problems. I also had a few foxgloves come up, and never seemed to have a problem. I think sometimes if animals are short of feed they are more likely to be tempted, or if they have some sort of mineral deficiency.
All the best
Sue
Dark Brown Eggs