During the summer solstice this plant tends to blossom and show its flowers. This is when the flowers are harvested and collected. The flower tops are what is used for the making oils, creams, tincture, infusions, and pills. This herb has been used throughout history during the medieval times in Europe. It was traditionally used on wounds and other injuries while also used for cheering up sad spirits. St. John’s Wort is a widely used herb today in modern times but is mostly used to treat depression and some anxiety. There are not many side effects from taking St. John’s Wort but the most common side effect is sunlight sensitivity. If sensitivity to the sun does occur, stop use and consider contacting your medical doctor. It is important not to use St. John’s Wort when taking blood thinners and antidepressants. St. John’s Wort will interact with these medications and cause serious complications.