Creeping Oregon Grape, Mahonia repens
The fruit is edible raw or cooked. An acid flavour but it is rather nice raw, especially when added to muesli or porridge. Unfortunately, there is relatively little flesh and a lot of seeds.
Used for making jams. jellies etc.
They can also be made into a refreshing lemonade-like beverage. When sugar is added, the fruit juice is similar to grape juice.
The fruit is about 9mm in diameter.
The root and root bark improves the digestion and absorption and is taken internally in the treatment of coughs, fevers, psoriasis, syphilis, haemorrhages, stomach complaints, kidney problems and impure blood conditions.
Externally, it is used as an antiseptic and healing wash or poultice on wounds and rheumatic joints.
The roots are harvested in late autumn or early spring and dried for later use.
A poultice of the fresh berries has been applied to boils.
Berberine, universally present in rhizomes of Mahonia species, has marked antibacterial effects and is used as a bitter tonic. Since it is not appreciably absorbed by the body, it is used orally in the treatment of various enteric infections, especially bacterial dysentery. It should not be used with Glycyrrhiza species (Liquorice) because this nullifies the effects of the berberine. Berberine has also shown antitumour activity. The root and root bark are best harvested in the autumn.
Plants form suckers freely, making a good dense ground cover, though they can be slow to become established and will need weeding for their first few years after planting out.