Plants

Comfrey

Herbs

Citation Formats

General Reference

Divinity Atlas. "Comfrey." Accessed August 30, 2026. https://divinity.interactivelion.com/plants/comfrey.

APA Style

Divinity Atlas. (n.d.). Comfrey. Retrieved August 30, 2026, from https://divinity.interactivelion.com/plants/comfrey

BibTeX

@misc{divinityatlas-comfrey,
  author = {Divinity Atlas},
  title = {Comfrey},
  year = {2026},
  url = {https://divinity.interactivelion.com/plants/comfrey},
  note = {Accessed August 30, 2026}
}

Comfrey, a herb, is ruled by Saturn in Culpeper's herbalism, cold, drying, and grounding, a herb of bone, structure, and age. Comfrey is knitbone and boneset, the great mender of the body's frame: its slimy, healing root and leaf were bound as a poultice on broken bones, sprains, and wounds, and folk said the crushed root would knit even severed flesh together, so that it was called by some the miracle plant of the bonesetter. Culpeper used it to heal inward and outward wounds, stay bleeding and fluxes, and soothe the ulcered gut and lungs. Its power to mend structure and bone marks it truly Saturnine, cold and consolidating. A grounding, knitting, bone-healing herb of old Saturn.

Facts

Debunked

Origin Period

1653 5Culpeper, The Complete Herbal

Agnes Arber's Herbals: Their Origin and Evolution: A Chapter in the History of Botany, 1470-1670 (Cambridge University Press, 1938) surveys the printed herbals of that two-century period and documents how the doctrine of signatures, that a plant's form, colour or habit declares its medicinal use, a yellow flower for the Sun, a perforated leaf for light, a plant of wet ground for the Moon, was applied inconsistently from one compiler to the next. Comparing planetary and use attributions for the same plants across different herbals, Arber finds no agreement between authors, direct evidence the method is a theory of resemblance rather than one of observation or testing. Where a signature plant does have a real effect, as St John's Wort, willow and the poppy do, Arber traces that activity to the plant's chemistry, unconnected to its appearance. The instability she documents between compilers is why this atlas gives no single planetary attribution as settled.

Origins

Botanical Identification

Symphytum officinale, family Boraginaceae, the borage family 3

Origin of the Name

From Old French confirie or Latin conferva, rooted in Latin confervere, "to boil together" or "to heal", reflecting the plant's long use as a wound and bone healing herb, also called knitbone. 4A Modern Herbal

Origin Region

Europe and western Asia 3

Meaning

Themes

Safe travel and money 2Cunningham

Attributions

Ruling Planet

Saturn 1Culpeper

Temperament

Cold, drying, and grounding, a herb of bone, structure, and age 1

Traditional Ailments

Used to heal wounds and soothe the ulcered gut 1

Correspondences

Element Correspondence

Water 2Cunningham

Learn More

The Bone-Knitting Root

Comfrey, Symphytum officinale, is a large, coarse, hairy perennial of damp ground with drooping bell-flowers and a thick black-skinned root. Its names all point one way: comfrey from the Latin confervere, to heal or grow together; the genus Symphytum from the Greek for uniting; and the country names knitbone and boneset. It was one of the most esteemed of the old wound-herbs, applied to sprains and fractures in the belief that it helped broken bones and torn flesh knit, a domestic reputation recorded here strictly as history, not as medical advice.

The belief that comfrey helped mend broken bones has a real, if partial, physical basis: the plant is unusually rich in allantoin, a compound that does encourage the growth of new skin and connective tissue in a wound, which is likely why a poultice of bruised comfrey leaf or root felt effective to generations of users, even though it could not actually knit a fractured bone beneath unbroken skin. This genuine allantoin content is also why comfrey remains a common ingredient in modern proprietary ointments for bruises and sprains, applied strictly to unbroken skin and for short periods, a continuation of the old wound-herb use under stricter modern limits.

A Herb of Saturn, and a Plain Caution

Culpeper placed comfrey under Saturn, the cold, binding, earthy planet, a fitting ruler for a dark-rooted plant of heavy clay reputed to bind and mend. In folk correspondence it carries meanings of healing, safety in travel and the mending of what is broken, whether bone or bond. A plain caution belongs with its history: comfrey contains pyrrolizidine alkaloids and is now known to be harmful, particularly to the liver, if taken internally, so its old use as a medicinal tea is given here only as folklore and not as anything to be repeated. Its symbolism of knitting-together and safe return remains, drawn from the genuine gluey, healing character the old herbalists prized.

Regulators in the United Kingdom, Germany, Canada and the United States have all restricted comfrey products since the 1990s and 2000s, removing internal preparations from sale or requiring warning labels once the pyrrolizidine alkaloid risk to the liver was firmly established by toxicological research, a case where old folk medicine was investigated by modern science and found genuinely to carry a real, if usually low-level, risk rather than being simply dismissed or simply confirmed. Comfrey remains legal and popular as a garden compost activator and mulch, valued today for the same fast, nutrient-rich growth that once recommended it as a wound herb.

Cross-Tradition Connections