With St. Patrick’s Day approaching, grocery stores and nurseries will be selling “shamrocks." As someone of Irish descent, I ...

AD, a missionary who earlier assumed the name Patricius, arrived in Ireland with the objective of converting the Celtic Irish to Christianity. Legend has it that he used a small, three-leafed plant to ...

By most accounts, the original shamrock is thought to be either yellow clover (Trifolium dubium) or white clover (Trifolium repens). Both plants have three oval green leaflets with tiny ...