This is where nativemedicinal come into play. Diversity is the key, the animals will find the plants they need. In many cases rather than using the same plant Sepp is observing as successful, we should be finding our own native medicinal plant that fills the same role.
Potent medicinal plants used to be wide spread everywhere in the Americas. There are still pockets of this great diversity and potent medicine but it is drastically reduced from what it used to be. We need to start cultivating this diversity to preserve the integrity of our environment, the ecosystems that support us.
Judith, Johnny, Zach, and Chad - Team Holzer AgroEcology
Black walnut hulls are also good dewormers. As are things high in tannins like acorns. And pumpkin seeds. And copper-accumulating plants like spurge (tho they can overeat them and get copper poisoning so you have to keep an eye out).