Lagasca's spurge

Lagasca's spurge (Euphorbia lagascae Spreng.) is an annual plant belonging to the Euphorbiaceae family. It has gained international recognition in agricultural research as a unique source of industrial vegetable oils, specifically those containing significant levels of epoxy fatty acids.

Originating from the Iberian Peninsula, the plant is naturally adapted to Mediterranean climatic conditions. It thrives in regions with warm, long summers and prefers full sun exposure, which is essential for the optimal accumulation of secondary metabolites in its seeds.

Botanically, it is a succulent-like herb with an erect growth habit. The plant is characterized by its white, milky sap and its distinct three-parted capsules that house the seeds. These seeds are the primary harvestable product, containing a high percentage of oil that is chemically distinct from standard food-grade vegetable oils.

Agronomically, Lagasca's spurge requires well-drained, sandy loam soils. It is relatively drought-tolerant once established but needs consistent moisture during the early vegetative stage. Weed management is critical in the early phases, and the harvest must be timed precisely to minimize seed shattering, which is a common challenge for this species.

The primary economic use of this crop is in the chemical industry. The seed oil is rich in vernolic acid, a natural epoxy fatty acid used in the synthesis of high-performance coatings, stabilizers for PVC, and environmentally friendly biodegradable plastics. Research continues into enhancing yield stability and harvesting efficiency for commercial production.

• High content of vernolic acid in seeds.
• Preferred soil: well-drained and neutral.
• Harvest challenge: seed shattering at maturity.
• Industrial applications in biopolymers and coatings.