Hypericum perforatum (St John's wort) is a species of perennial herb in the family Hypericaceae. It has a self-supporting growth form. It is associated with freshwater habitat. It is native to India, Germany, Russia, Greece, Armenia, Kyrgyzstan, Finland, Italy, Iraq, Spain, Croatia, Morocco, Pakistan, Bulgaria, Israel, Yugoslavia, Lebanon, France, Kazakhstan, Poland, Sweden, Cyprus, Lithuania, Iran, Austria, China, Norway, Tunisia, Slovenia, Syria, Azerbaijan, Belgium, Romania, Ireland, United Kingdom, Turkmenistan, Macedonia, Malta, Sudan, Hungary, Estonia, Portugal, Algeria, Uzbekistan, Czech Republic, the Netherlands, Tajikistan, Saudi Arabia, Georgia, Andorra, Gibraltar, Bosnia & Herzegovina, Mongolia, Denmark, Afghanistan, Slovakia, and Albania. It has simple, broad leaves. Flowers are visited by Meligethes. It is a photoautotroph. Individuals can grow to 0.5 m.
EOL has data for 35 attributes, including: