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  • HYPERICUM PYRAMIDATUM | Great St. John's Wort
  • HYPERICUM PYRAMIDATUM | Great St. John's Wort Range map



Product Description

Hypericum from the ancient Greek name for this genus.

Sun Exposure               Prairie, Savanna
Soil Moisture Wet Mesic, Mesic
Bloom Time

Summer                              July, August

Bloom Color Yellow
Max Height 6 feet
Wetland Code FACU
Germ Code  C(60), D
Seeds Per Packet  1,000
Seeds Per Ounce   190,000


The largest of the St. John's Worts, H. pyramidatum can reach 6 feet in height. Large elliptic leaves (2 - 3 inches) with 2 inch yellow flowers. Blooms from June to August.

Although widely known and still used medicinally, H. pyramidatum is not the species that enjoys that popularity. The one we all know and many of us use daily is H. perforatum.

Edible Uses: Young leaves, shoot tips and flowering buds - cooked.

The leaves are a tea substitute.

Medicinal Uses: The fruit is emmenagogue and is also used to treat skin complaints and gonorrhoea. The whole plant is depurative, febrifuge, poultice and vulnerary. A decoction is used in the treatment of boils and abscesses, headaches and stomach ache and vomiting.

The root is considered to be specific for use in treating the first stages of consumption.

A powder made from the boiled root has been applied as a poultice to draw the poison out of a snake bite.

Herbal Uses: Unknown

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