Broomweed, Broom snakeweed

Gutierrezia sarothrae

Physical Characteristics

Gutierrezia sarothrae is a deciduous Shrub growing to 1 m (3ft 3in). See above for USDA hardiness. It is hardy to UK zone 8. It is in flower from August to October. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils and can grow in very alkaline soils. It cannot grow in the shade. It prefers dry or moist soil.

Distribution

Western N. America - Manitoba to Montana, south to Texas and California.

Habitats

Cultivated Beds;

Edible Uses

None known

Medicinal Uses

Antirheumatic Astringent Cancer Cathartic Diuretic Laxative Pectoral Sedative Skin Stings Stomachic Broomweed was widely employed medicinally by several native North American Indian tribes who used it to treat a variety of complaints[257]. It is little, if at all, used in modern herbalism. A decoction of the roots has been used in the treatment of painful urination, diarrhoea and stomach aches[257]. The roots have been placed in boiling water and the steam inhaled in the treatment of respiratory complaints[257]. The flowers are laxative[257]. A decoction of the fresh flowers has been used in the treatment of diarrhoea[257]. The leaves are cathartic, febrifuge and sedative[257]. An infusion has been used in the treatment of coughs and colds[257]. It has also been used as a bath to treat fevers and sores, including those caused by venereal diseases[257]. A poultice of the moistened leaves has been used to treat bruises, wounds, sprains, nose bleeds and insect stings[257]. A protein in the plant is reported to have anti-cancer activity[274]. A strong, black infusion of the plant has been used as a rub on rheumatic joints[257].

Known Hazards

In large quantities this plant can be toxic to grazing animals, possibly due to the presence of saponins[212, 274].