or shrubby St John's Wort and Hypericum densiflorum (bushy St. John's wort). These plants will tolerate various conditions, so they are among the best perennials for low-maintenance gardening.

It was originally harvested for the feast of St. John the Baptist. The word ‘wort’ is the Old English name for plant. St. John’s wort has become one of the most popular herbal supplements ...