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Summary

Physical Characteristics

Erythronium oregonum is a BULB growing to 0.5 m (1ft 8in) by 0.1 m (0ft 4in).
It is hardy to zone (UK) 5 and is not frost tender. It is in flower from April to May, and the seeds ripen from June to July. The species is hermaphrodite (has both male and female organs).
Suitable for: light (sandy) and medium (loamy) soils and prefers well-drained soil. Suitable pH: acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland). It prefers moist soil.

Synonyms

Habitats

Woodland Garden Dappled Shade; Shady Edge; Lawn;

Edible Uses

Edible Parts: Root.
Edible Uses:

Bulb - raw, cooked or dried for later use[183, 257]. The bulb is from 25 - 60mm long[270]. Some caution should be employed, see the notes above on toxicity[256].

Medicinal Uses

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.

Poultice.

The crushed corm is used as a poultice for boils[207, 257].

Other Uses

None known

Cultivation details

Prefers slightly acid soil conditions but succeeds in chalky soils if these contain plenty of humus[164]. Requires semi-shade, preferably provided by trees or shrubs, and a well-drained soil[42, 164]. Succeeds in almost any light soil, preferring one that is rich in humus[1]. Plants are hardy to about -15°c[90]. Flowers are produced in 3 - 4 years from seed[164]. Plants increase rapidly by offsets[188]. Bulbs should be planted about 7cm deep[1]. This species is closely related to E. revolutum and occasionally hybridizes with it where their ranges meet[270]. In addition, E. citrinum and E. hendersonii are reported to hybridize with E. oregonum in the southern part of its range[270]. This species is closely related to E. californicum[200].

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Propagation

Seed - best sown as soon as it is ripe in a shady position in a cold frame. Water lightly in summer, it should germinate in autumn or winter[164, 200]. Stored seed requires a period of cold stratification[164]. Sow as early in spring as possible in a cold frame. Sow the seed thinly so that it will not be necessary to prick them out for their first year of growth. Give an occasional liquid feed to the seedlings to make sure that they do not become nutrient deficient. When the plants are dormant, pot up the small bulbs putting 2 - 3 bulbs in each pot. Grow them on in a shady position in the greenhouse for another 2 3 years and then plant them out into their permanent positions when they are dormant in late summer. Division of the bulbs in the summer as the leaves die down[1]. Larger bulbs can be replanted immediately into their permanent positions, but it is best to pot up smaller bulbs and grow them on in a shady position in a greenhouse for a year before planting them out when dormant in late summer.

Other Names

If available other names are mentioned here

Found In

Countries where the plant has been found are listed here if the information is available

Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

Conservation Status

IUCN Red List of Threatened Plants Status :

Related Plants

Latin Name	Common Name	Edibility Rating	Medicinal Rating
Erythronium albidum	White Trout-Lily, White fawnlily	3	0
Erythronium albidum mesochoreum	Prairie Trout Lily	3	0
Erythronium americanum	Trout Lily, Dogtooth violet	4	1
Erythronium californicum	Fawn Lily, California fawnlily	2	0
Erythronium citrinum	Pale Fawn Lily, Cream fawnlily, Roderick's fawnlily	2	0
Erythronium dens-canis	Dog's-Tooth Violet	3	0
Erythronium grandiflorum	Avalanche Lily, Yellow avalanche-lily	3	1
Erythronium helenae	Mt. St. Helena Fawm Lily, Pacific fawnlily	2	0
Erythronium hendersonii	Henderson's Fawn Lily	2	0
Erythronium howellii	Howell's Fawn Lily	2	0
Erythronium japonicum	Katakuri	4	0
Erythronium montanum	Avelanche Lily, White avalanche-lily	2	0
Erythronium multiscapideum	Adderstongue	2	0
Erythronium purpurascens	Avelanche Lily, Purple fawnlily	2	0
Erythronium revolutum	Pink Fawn Lily, Mahogany fawnlily	3	0
Erythronium tuolumnense	Tuolumne Fawn Lily, Dog's Tooth Violet, Pagoda Lily	2	0

Expert comment

Author

Applegate.

Botanical References

60200270

Links / References

For a list of references used on this page please go here

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Subject : Erythronium oregonum

Erythronium oregonum - Applegate.