It’s been said that all that glitters is not gold. Transfer that thought to your pastures, and all that is green isn’t good — especially for your cattle.

Indeed, there are many plants that can cause illness, death, abortion, birth defects, metabolic disorders, photosensitization and other problems in cattle. The USDA estimates average loss from poisonings between 3% and 5%, but this does not include expenses involved in trying to prevent animals from being poisoned, or treat poisoned ones.

Here’s a rundown of poisonous plants to watch for in your pastures.