St. John's Wort, Hypericum perforatum
The herb and the fruit are sometimes used as a tea substitute.
The flowers can be used in making mead.
In clinical trials about 67% of patients with mild to moderate depression improved when taking this plant.
The herb is used in treating a wide range of disorders, including pulmonary complaints, bladder problems, diarrhoea and nervous depression.
It is also very effectual in treating overnight incontinence of urine in children.
Externally, it is used in poultices to dispel herd tumours, caked breasts, bruising etc.
The flowering shoots are harvested in early summer and dried for later use. Use the plant with caution and do not prescribe it for patients with chronic depression.
The plant was used to procure an abortion by some native North Americans, so it is best not used by pregnant women.
A tea or tincture of the fresh flowers is a popular treatment for external ulcers, burns, wounds (especially those with severed nerve tissue), sores, bruises, cramps etc.
An infusion of the flowers in olive oil is applied externally to wounds, sores, ulcers, swellings, rheumatism etc. It is also valued in the treatment of sunburn and as a cosmetic preparation to the skin.
Yellow, gold and brown dyes are obtained from the flowers and leaves. A red is obtained from the flowers after acidification. A red dye is obtained from the whole plant when infused in oil or alcohol. A yellow is obtained when it is infused in water.
It grows well in the summer meadow and is a useful plant for attracting insects.