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Rhamnus purshianus
Cascara sagrada
Evergreen tree
(1 Page of 5)

 
The Rhamnus purshianus plant species is found in Western N. America - British Columbia to California. It is a member of the Rhamnaceae family. Common gardeners may know the plant as Cascara sagrada. Some home gardeners know the variety as Frangula purshiana. (DC.)Cooper.

Cultivation | Propagation | General Uses
Medicinal | Edible Uses
 
Latin Name:  Rhamnus purshianus
Common Name:  Cascara sagrada
Family:  Rhamnaceae
Author:  DC.
 
Known Hazards:  There is the suggestion that this species could be mildly poisonous[19, 65].
 
Mature Height:  10   Mature Width:  6
 
Habitat:  Rich bottom lands and sides of canyons, usually in coniferous forests[60, 82].



Medicinal Information:  Cascara sagrada is widely used as a gentle laxative that restores tone to the bowel muscles and thus makes repeated doses unnecessary[226, 244]. It is often sold in chemists etc[226]. The bark is used, this is harvested on a commercial basis from wild trees and plantations in western N. America[226]. It should be harvested in the autumn or spring at least 12 months before it is used medicinally, in order to allow the more violent purgative effect to be mollified with age[95, 213]. Three year old bark is considered to be the best age[4]. It is considered suitable for delicate and elderly persons and is very useful in cases of chronic constipation[4]. The bark also has tonic properties, promoting gastric digestion and appetite[1, 4, 11, 21, 57, 94, 95, 165]. As well as its uses as a laxative, it is taken internally in the treatment of digestive complaints, haemorrhoids, liver problems and jaundice[238]. This remedy should be used with caution since in excess it causes vomiting and diarrhoea[238]. It should not be prescribed for pregnant or lactating women, or patients with intestinal obstruction[238]. An infusion of the bark is ometimes painted over finger nails in the hope that the bitter taste will deter the person from biting their nails[238].

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Cultivation | Propagation | General Uses
Medicinal | Edible Uses
 

The information above has been supplied solely via the hard work and dedication of the team at 'Plants for a Future'.
View their bibliography
Useful Edible Plants Future

 


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