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Udo

Aralia cordata

Also called Japanese Spikenard, Japanese Asparagus, Spikenard

Udo
Photo: User:BotBln, CC BY-SA 3.0

Udo is a herbaceous perennial that grows 1.2 to 3 metres tall, grown mainly for its blanched spring shoots eaten as a vegetable in East Asia. It thrives in rich, moist soil in partial shade, and the shoots are the key crop to manage.

Family
Araliaceae (Ivy family)
Grows as
Perennial
Light
Full sun, Shade
Water
Keep soil consistently moist, especially during summer growth.
Soil
Rich, moist, well-drained soil with plenty of organic matter.
Temperature
Hardy in cold winters; protect young shoots from late frost.
How easy
Easy
Safety
Toxic: The fruit is a small black drupe that may be toxic to humans.
Edible
Yes, some parts
Native range
SE. China (to Hubei), Sakhalin to Temp. E. Asia
Climate
temperate

About

Aralia cordata is an upright herbaceous perennial plant growing up to 2 to 3 metres (6.6 to 9.8 ft) in height, native to Japan, Korea, Russian Far East, and eastern China. Its common names include spikenard, herbal aralia, udo (from Japanese: ウド), Japanese spikenard, and mountain asparagus. It is commonly found on the slopes of wooded embankments. Aralia cordata is a species of Aralia in the family Araliaceae.

The plant yields new shoots every spring, which are blanched and then eaten as a vegetable. In Korea, the dried root of the plant has been traditionally used as medicine. The young shoots have a strong yet pleasant distinct aromatic flavor. In addition to food and medicinal use, the plant is cultivated as an ornamental.

Uses

Per 100 grams of raw stem, Aralia cordata contains 220 mg of potassium, 7 mg of calcium, 9 mg of magnesium, 25 mg of phosphorus, 0.2 mg of iron, 0.1 mg of zinc and 4 mg of vitamin C.

Other Aralia plants

California spikenard · Japanese angelica tree · American spikenard · Devil's walkingstick · Spikenard

Text excerpted from the Wikipedia article Aralia cordata by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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