Boswellia: The Plant Behind Frankincense Essential Oil

Boswellia trees produce the precious resin from which frankincense essential oil is extracted. These hardy trees grow in the arid regions of the Horn of Africa, the Arabian Peninsula, and India. The resin is harvested by making shallow incisions in the bark, allowing the sap to flow out and harden into amber-colored tears.

Botanical Description

Boswellia trees are small to medium deciduous trees, typically reaching 2-8 meters in height. They thrive in rocky, limestone soils of extremely dry environments. The genus includes approximately 20 species, with Boswellia carterii, B. sacra, and B. serrata being the most important for essential oil production.

Resin Harvesting

Harvesting involves making precise cuts in the bark, allowing the milky-white sap to exude and solidify over 10-14 days. The first harvest yields lower quality resin; subsequent harvests produce increasingly pure, aromatic tears. Sustainable harvesting is crucial, as overharvesting threatens wild populations.