Jatropha (Spicy Jatropha)

Jatropha, specifically Jatropha integerrima (commonly known as Spicy Jatropha or Peregrina), is a stunning, ever-blooming evergreen shrub or small tree belonging to the Euphorbiaceae family. Native to Cuba and the West Indies, it is widely celebrated in tropical and subtropical landscaping for its brilliant, year-round floral displays. These vibrant flowers act as an absolute magnet for hummingbirds and butterfly species, particularly the large swallowtails.

Identification of this plant is straightforward. It features striking, star-shaped flowers characterized by 5 vivid scarlet-red or coral-pink petals. These flowers bloom in continuous clusters (cymes) held high above the foliage on long stalks. The leaves are glossy, dark green, and highly variable in shape—even on the exact same plant. You will often find perfectly oval leaves alongside deeply lobed or unique fiddle-shaped leaves. Like its relatives, the stems release a milky or clear sap when broken.

The floral formula for Jatropha reflects its monoecious nature (bearing separate male and female flowers on the same plant). ⊕ ♂ K5 C5 A10 G0 / ⊕ ♀ K5 C5 A0 G(3). Both male and female flowers are radially symmetrical. Male flowers have 5 sepals, 5 petals, and 10 stamens. Female flowers have 5 sepals, 5 petals, and a superior ovary comprised of 3 fused carpels. They lack the specialized cyathium structure seen in Euphorbias.

Growing Jatropha requires full sun, though it can tolerate dappled shade in extremely hot climates. It is highly adaptable to various soil types, provided they are very well-draining. It is extremely heat and drought-tolerant once established, making it a favorite for xeriscaping. It can be grown as a dense bush or trained as a small, umbrella-like tree reaching 10-15 feet in USDA zones 10-11.

Culturally, it is used extensively as a low-maintenance, high-impact ornamental in frost-free regions. Additionally, other species within the Jatropha genus (such as J. curcas) have gained massive global attention and agricultural research as a highly promising source of sustainable biodiesel fuel.

Warning: Jatropha is HIGHLY TOXIC. All parts of the plant, especially the seeds, contain highly dangerous toxalbumins (like curcin) and potent purgative oils. Ingestion can cause severe, life-threatening gastrointestinal distress, vomiting, and dehydration in humans, dogs, and cats. The sap can also cause contact dermatitis upon skin exposure.

It is sometimes confused with Oleander or Plumeria due to its continuous tropical blooming habit, but Jatropha's distinctively varied leaf shapes and specific star-shaped red flowers easily set it apart. Compare its structure with its cousin, the Crown of Thorns, or explore more in the Flower Identifier.