St. John's wort is a perennial herbaceous plant, up to 1m tall. It has a very firm, branched and upright stem, with opposite branches. The leaves are small, ovoid, interwoven with many transparent dots, so the leaf looks like it is finely pierced. These are glands full of essential oil. The flowers are yellow and are located at the top of the stem. It blooms in May and June.
As a tea, it is used to treat stomach ailments, diseases of the kidneys, liver, spleen and bladder. It is especially recommended for uncontrolled urination. St. John's wort oil is used externally for cuts, for wound healing, as an antiseptic, as protection from radiation during sunbathing, for burns and numerous rheumatic diseases. St. John's wort oil is especially recommended for the care and protection of sensitive skin.