🌲 Lots of people are scared of ponderosa pine, which in reality is unjustified. 🐄 Pinus ponderosa is a very large pine species native to western North America. In the late 1900's a rancher observed some of his cattle aborting calves early and it was immediately apparent the pine was to blame. By the 1970's studies were being conducted on its potential toxic effects for livestock. These studies showed that the toxin within ponderosa pine that causes abortion is isocupressic acid, due to inhibit