Hypericum perforatum is one of the less45cultivated hypericums in uk gardens and is rarely available in garden centres with golden star45shaped flowers at the tips of upright stems throughout the summer this hardy perennial makes an excellent addition to wild flower gardens commonly known as st john39s wort it is best known for its use in complementary medicine as an anti45depressant height 100cm 40393441 spread 60cm 40243441