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NL·0164PlantsSolanaceaeShrub2,428 field observations
AshwagandhaNL·0164
Plate 1 of 8. (c) Yael Orgad, some rights reserved (CC BY-NC), uploaded by Yael Orgad · via iNaturalist

Herbarium of the Nature Library

Name
Withania somnifera
Family
Solanaceae
Native to
Dry regions from the Mediterranean and North & East Africa through the Middle East to India and Sri Lanka
Habitat
Arid scrub, Dry tropical savanna, Disturbed ground
IUCN NE · Not evaluated

Ashwagandha

Withania somnifera

Also calledAshwagandha (Sanskrit, 'smell of horse') · Asgandh (Hindi/Urdu, Unani) · Indian ginseng (English) · Winter cherry (English) · Oroval (Spanish)

A grey-velvety nightshade-family shrub of dry country, whose horse-scented roots are Ayurveda's best-known rasayana (rejuvenating tonic). Its small orange-red berries hide inside papery lanterns, like those of its cousin the Chinese lantern.

Withania somnifera, known commonly as ashwagandha, is an evergreen shrub in the Solanaceae family that is native to the Middle East and North Africa, other African regions, southern Europe, Indian subcontinent, and Southeast Asia. Several other species in the genus Withania are morphologically similar. Other common names include Indian ginseng and winter cherry. Wikipedia

§1

What it can do

  1. iMakes withanolides, steroidal lactones such as withaferin A that are studied for anti-inflammatory and anti-stress activity
  2. iiTolerates drought, heat and poor alkaline soils, needing very little water
  3. iiiEncloses its berries in an inflated papery calyx that protects them as they ripen
§2

At the table

Edible
Edible with care
Not eaten
Toxic
Deadly

Roots are taken as a powder or extract, not eaten as food. Like many Solanaceae, leaves and unripe berries contain potentially toxic compounds.

§3

In the medicine cabinet

TraditionUse
AyurvedaRasayana tonic for debility, ageing, insomnia, stress and low libido; given in milk (ashwagandha ksheerapaka)
UnaniAsgandh used as a nervine and aphrodisiac tonic and applied to painful swellings
African traditional medicineLeaves and roots used in parts of East and Southern Africa as poultices for wounds and for fever
Modern phytotherapyRoot extracts trialled for stress, anxiety and sleep, with small positive studies

Weight of evidence

Moderate. Some clinical trials with promising but limited or mixed results.

Active compounds

withaferin A, withanolide D, withanolide A, withanosides, tropine-type alkaloids

CautionLiver injury has been reported with supplements, and Denmark banned ashwagandha products in 2023. May raise thyroid hormone levels and add to sedatives. Avoid in pregnancy, as it was traditionally used to cause abortion, and take care with autoimmune disease or immunosuppressants. Trials are mostly small and short.
§4

Fruit & seed

Fruit: Withania somnifera fruitFruit: Withania somnifera SA fruit

Fruit

Berry in an inflated calyx

Ripens: Autumn–winter

Orange-red berry about 6 mm wide, enclosed in a papery husk; not eaten.

Seed

~2 mm

Flat, kidney-shaped, yellowish seeds

Dispersal
Birds eat the berries
Germination
8–14 days at 20–30 °C; sow shallowly

Photographs from Wikimedia Commons under open licences; hover for the photographer, click for the file.

§5

How to grow it

Hardiness (USDA zones)

1
2
3
4
5
6
7
8
9
10
11
12
13

USDA 8–11 (annual elsewhere). Survives winters down to about -12 °C.

Light
Full sun
Water
Low
Soil
Sandy or stony, well-drained, slightly alkaline
Propagation
Seed
To harvest
Roots at 150–180 days
Climates
Arid, Semi-arid, Subtropical
  1. 1Sow seed shallowly in warm soil in late spring or at the start of the rains
  2. 2Thin seedlings to 30–60 cm and water sparingly
  3. 3Harvest roots when the berries ripen and the leaves begin to dry
  4. 4Wash, cut and sun-dry the roots

Can it grow where you are?

or
§6

Where it lives

Recorded sightings

—

geo-referenced records in GBIF, from museums, herbaria and field observers.

Native range

Dry regions from the Mediterranean and North & East Africa through the Middle East to India and Sri Lanka

Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.

§7

In the old herbals & bestiaries

Woodcuts and engravings matched from the Source Library’s scanned books by name. Plates marked “relative” show a close kin rather than this exact species. Click a plate to read the page it came from, with translation.

§8

In the stacks

Searching the stacks…

Every page naming Withania somnifera in the Biodiversity Heritage Library →

§9

Marginalia

The Charaka Samhita (c. 1st–2nd century CE) lists ashwagandha among the strengthening herbs. Its Sanskrit name, 'smell of horse', is said to describe both the root's odour and the strength it was believed to give.

Curiosity

Linnaeus first placed the plant in the genus Physalis, alongside tomatillos and Cape gooseberries, because of the lantern-like husk around its berry.

§10

Kinship

  1. kingdomPlantae
  2. ›phylumTracheophyta
  3. ›subphylumAngiospermae
  4. ›classMagnoliopsida
  5. ›orderSolanales
  6. ›familySolanaceae
  7. ›subfamilySolanoideae
  8. ›tribePhysaleae
  9. ›genusWithania
Open its branch on the Wheel of Life →

Photographs: iNaturalist contributors under the licences shown. Records: GBIF.org. Historical plates: Source Library (CC BY-SA 4.0; originals public domain). Summary text: Nature Library editors and Wikipedia (CC BY-SA). Medicinal and edibility notes are historical and educational, not advice. iNaturalist taxon 182191.