Asarum caudatum
Lindl.
Wild Ginger, British Columbia wildginger
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Description
Asarum caudatum is an evergreen Perennial growing to 0.1 m (0ft 4in) by 0.3 m (1ft) at a fast rate. See above for USDA hardiness. It is hardy to UK zone 7. It is in leaf all year, in flower from July to August. The species is hermaphrodite (has both male and female organs) and is pollinated by Flies. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: mildly acid and neutral soils. It can grow in full shade (deep woodland) or semi-shade (light woodland). It prefers moist soil.
Edible Uses
Tea. The root can be used as a ginger substitute. The root has a pungent, aromatic smell like mild pepper and ginger mixed, but more strongly aromatic. It can be harvested all year round, but is best in the autumn. It can also be dried for later use. Leaves are a tea substitute.
Medicinal Uses
Analgesic Antirheumatic Appetizer Laxative Poultice Stomachic Tonic. The root is laxative, stomachic and tonic. A tea made from the root is used in the treatment of colds, colic, indigestion and stomach pains. The root is harvested in the autumn and dried for later use. The whole plant is analgesic, antirheumatic, appetizer and tonic. A decoction is used externally to treat headaches, intestinal pain and knee pains. A poultice made from the heated leaves is applied to boils, skin infections and toothaches, whilst a decoction of the leaves is used as a wash on sores.
Known Hazards
Although no reports of toxicity have been found for this plant, at least 3 other members of this genus have reports that the leaves are toxic. Some caution is therefore advised in the use of this plant.
Distribution
Western N. America - British Columbia to California.
Where It Grows
NORTHERN AMERICA: Canada (British Columbia), United States (Idaho (north), Montana (west), Oregon, Washington), United States (California (n. & w.))
Cultivation
Prefers a rich moist neutral to acid soil in woodland or a shady position in the rock garden. Plants are hardy to at least -15°c. The flowers are malodorous and are pollinated by flies. Plants often self-sow when growing in a suitable position.
Propagation
Seed - best sown in a cold frame as soon as it is ripe in the summer. Stored seed will require 3 weeks cold stratification and should be sown in late winter. The seed usually germinates in the spring in 1 - 4 or more weeks at 18°c. When large enough to handle, prick the seedlings out into individual pots and grow them on in light shade in the greenhouse for at least their first winter. Plant them out when large enough in late spring. Division in spring or autumn. Plants are slow to increase. It is best to pot the divisions up and keep them in light shade in the greenhouse until they are growing away strongly.
Other Uses
A useful ground-cover plant for deep shade, spreading by its roots.
