Costmary
Image: Stanislav Doronenko (CC BY 2.5)
NameCostmary
Scientific NameTanacetum balsamita
Common NamesCostmary, Alecost, Mint Geranium, Bible Leaf, Balsam Herb
Plant FamilyAsteraceae
Natural HabitatNative to Eurasia, Costmary is often found in old gardens, disturbed areas, roadsides, and meadows, thriving in temperate climates. It prefers full sun to partial shade and well-drained soil.
Parts Usedleaf,flower,whole_plant
Medicinal Actionscarminative,antimicrobial,anti-inflammatory,astringent,diuretic
Traditional UsesTraditionally used to aid digestion, relieve flatulence and stomach cramps, and as a mild laxative. It was also employed as a tonic, for fevers, colds, and as an anthelmintic. The leaves were historically placed in Bibles to keep people awake during long sermons, earning it the name 'Bible Leaf'.
Active Constituentsessential oils (carvone, thujone, camphor, chrysanthenyl acetate), flavonoids, sesquiterpene lactones
Preparation Methodsinfusion,tincture,powder,salve
Contraindications & WarningsDue to potential thujone content in some chemotypes, large doses or prolonged use should be avoided, especially by pregnant or breastfeeding women, and individuals with seizure disorders. Allergic reactions are possible in sensitive individuals, particularly those allergic to other Asteraceae plants.
Cultivation NotesEasy to grow in full sun to partial shade and well-drained soil. It is drought-tolerant once established and can spread vigorously via rhizomes, so containment might be necessary to prevent overgrowth.
Raritycommon
Description
Costmary is a perennial herbaceous plant growing up to 1 meter tall, characterized by its aromatic, oblong to ovate, serrated leaves. It produces small, button-like yellow flower heads, often without ray florets, arranged in loose clusters.
