The Nature LibraryEN·ES
NL·0024PlantsAsphodelaceaeSucculent49,110 field observations
Aloe veraNL·0024
Plate 1 of 8. (c) Photo by David J. Stang, some rights reserved (CC BY-SA) · via iNaturalist

Herbarium of the Nature Library

Name
Aloe vera
Family
Asphodelaceae
Native to
Probably originated in the Arabian Peninsula; known only in cultivation. Naturalised in arid regions worldwide
Habitat
Desert, Arid scrub
IUCN NE · Not evaluated

Aloe vera

Aloe vera

Also calledGhritakumari (Sanskrit) · Gwarpatha (Hindi) · Ṣabr صبر (Arabic) · Lúhuì 芦荟 (Chinese) · Sábila (Spanish) · Elwa / Musabbar (Unani, dried latex)

A stemless succulent whose plump leaves hold a cool, clear gel under a yellow, bitter latex, two quite different medicines in one leaf. It is grown on every continent but no longer known in the wild.

Aloe vera is a succulent plant species of the genus Aloe. It is widely distributed and is considered an invasive species in many regions of the world. Wikipedia

§1

What it can do

  1. iUses CAM photosynthesis, opening its pores only at night to save water
  2. iiLeaf gel is mostly water bound in polysaccharides such as acemannan
  3. iiiYellow latex under the skin contains aloin, a strong purgative
  4. ivSurvives months of drought by drawing on water stored in its leaves
§2

At the table

Edible
Edible with care
Not eaten
Toxic
Deadly

Eateninner leaf gel (washed)

The clear inner gel is eaten and drunk, for example in Asian aloe drinks, once the yellow latex has been rinsed off completely. The latex (aloin) is a harsh laxative and can cause cramping, diarrhoea and potassium loss.

§3

In the medicine cabinet

TraditionUse
AyurvedaGhritakumari gel for burns, skin disease, liver disorders and as a female tonic (kumari asava)
UnaniDried latex (sibr/musabbar) as a purgative and in pills for liver and skin complaints
Traditional Chinese MedicineLuhui (dried latex) used to purge heat and for constipation and worms
Modern phytotherapyTopical gel for minor burns, psoriasis and radiation skin reactions

Weight of evidence

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

Active compounds

aloin (barbaloin), aloe-emodin, acemannan, aloesin, anthraquinone glycosides

CautionTopical gel for burns has modest, mixed support. In 2002 the US FDA removed aloe latex from over-the-counter laxatives for lack of safety data, and whole-leaf extract caused intestinal tumours in rats. Oral latex can cause severe diarrhoea, low potassium and kidney injury, and should be avoided in pregnancy and with digoxin or diuretics.
§4

Fruit & seed

Fruit

Capsule

Ripens: Late winter–spring

Dry three-valved capsule; seldom sets seed in cultivation.

Seed: Aloe-vera-seeds-ethnoplants

Seed

~5 mm

Flat, black, winged seeds (rarely produced)

Dispersal
Wind
Germination
Warm (above 21 °C), on gritty mix; 1–4 weeks

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 9–11. Survives winters down to about -7 °C.

Light
Full sun to bright shade
Water
Low
Soil
Sandy or gritty, sharply drained
Propagation
Offsets (pups)
To harvest
Leaves from plants 2–3 years old
Climates
Arid, Mediterranean, Tropical dry
  1. 1Pot offsets in cactus mix and wait a week before watering
  2. 2Water deeply only when the soil is dry; much less in winter
  3. 3Cut outer leaves at the base and stand upright to drain the yellow latex
  4. 4Bring indoors below about 5 °C

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

Probably originated in the Arabian Peninsula; known only in cultivation. Naturalised in arid regions worldwide

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

§7

In Gerard's Herball, 1597

Page 409 of Gerard's Herball, 1597: Of herbe Aloë, or Sea Houseleeke

Second Booke · Chap. 134 · p. 409 · read the page →

Of herbe Aloë, or Sea Houseleeke.

John Gerard, The Herball, or Generall Historie of Plantes, London, 1597. What England's best-known herbal said of aloe vera, in its own spelling.

The place
This plant groweth very plentifully in India, & in Arabia, Cœlosyria, & Egypt: from whence the iuice put into skins is brought into Europe. It groweth also, as Dioscorides writeth, in Asia on the sea coasts, and in Andros, but not verie fit for iuice to be drawne out.
The time
The herbe is alwaies greene, and likewise sendeth foorth braunches, though it remaine out of the earth, especially if the roote be couered with lome, & now & then watered: for so being hanged on the feelings and vpper posts of dining roomes, it doth …

Gerard wrote within Galenic humoral medicine, and his opinions, including about the peoples of the Americas and their crops, are those of 1590s London. His “vertues” are history, not advice. Transcription: Source Library (CC BY-SA 4.0). The whole chapter in the Herball Room.

§8

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.

§9

In the stacks

Searching the stacks…

Every page naming Aloe vera in the Biodiversity Heritage Library →

§10

Marginalia

Dioscorides described aloe for wounds and purging in the 1st century CE, and dried aloe latex was traded from the Red Sea to India and China. In Arabic, sabr means both 'aloe' and 'patience'.

Curiosity

Barbados was long a leading exporter of dried aloe latex, sold as 'Barbados aloes', which is why the plant was once called Aloe barbadensis.

§11

Kinship

  1. kingdomPlantae
  2. ›phylumTracheophyta
  3. ›subphylumAngiospermae
  4. ›classLiliopsida
  5. ›orderAsparagales
  6. ›familyAsphodelaceae
  7. ›subfamilyAsphodeloideae
  8. ›genusAloe
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 126882.