What is one possible reason silphium disappeared?

One possible reason for the disappearance of silphium is overharvesting. Silphium was highly valued in ancient times for its medicinal and culinary properties, leading to a high demand for the plant. As a result, it is believed that the plant was harvested to extinction, with no efforts made to cultivate it and ensure its sustainability. Additionally, changes in climate and habitat loss may have also played a role in the decline of silphium populations. Overall, a combination of overharvesting, habitat destruction, and environmental factors likely contributed to the disappearance of silphium from the wild.