Shrubs & Herbs
Shrubs & Herbs
Ginger Thomas
Tecoma stans
Photo: Wikimedia Commons contributor (CC BY-SA 2.0)
Ginger Thomas is one of the most familiar flowering shrubs in Trinidad and Tobago, its clusters of bright yellow, trumpet-shaped flowers a constant presence along roadsides, in gardens, and at forest edges across both islands.
Ginger Thomas is one of the most familiar flowering shrubs in Trinidad and Tobago, its clusters of bright yellow, trumpet-shaped flowers a constant presence along roadsides, in gardens, and at forest edges across both islands. Fast-growing and drought-tolerant, it thrives in the degraded and disturbed habitats of both urban and rural areas, providing nectar for butterflies, hummingbirds, and bees year-round. It is the national flower of the United States Virgin Islands and has a long tradition of medicinal use across the Caribbean.
Description
A fast-growing, semi-woody shrub to small tree typically 2 to 6 metres tall, with multiple stems from the base and a loose, spreading habit. Bark is pale grey and slightly fissured on older stems. Leaves are pinnately compound with 5 to 13 toothed, lanceolate to elliptic leaflets, bright green and slightly aromatic when crushed. Flowers are bright yellow (occasionally with orange stripes in the throat), tubular to bell-shaped, about 3 to 5 cm long, produced in terminal clusters throughout the year with peaks during and after the rainy season. Fruit is a long, slender, pod-like capsule 10 to 20 cm long, splitting to release many papery-winged seeds.
Ecology
Ginger Thomas is a pioneer and secondary-vegetation species, thriving in disturbed ground, roadsides, abandoned fields, dry scrub, and forest edges. It tolerates poor, rocky, and shallow soils and is drought-hardy once established. The abundant nectar-rich flowers attract a wide range of pollinators including Monarch butterflies, many bee species, and hummingbirds including the Copper-rumped Hummingbird. It is one of the most reliable year-round nectar sources for urban wildlife in T&T. The plant reproduces prolifically by wind-dispersed seed and can become locally dominant in disturbed areas.
Traditional Medicine
Ginger Thomas has a long history of use in Caribbean traditional medicine. Leaves and bark are boiled to prepare teas used for diabetes, digestive complaints, respiratory conditions, and skin problems. In T&T the plant is widely known as a remedy for diabetes and hypertension. Several studies have investigated the pharmacological basis for these uses, finding compounds with anti-hyperglycaemic and anti-inflammatory activity in laboratory conditions, though clinical evidence remains limited. The common name "ginger thomas" is used in T&T and the Eastern Caribbean; elsewhere in the region the plant is known as yellow elder or yellow bells.
Threats
- Generally secure; common and widespread in disturbed habitats
- Potential displacement in natural habitats by more aggressive invasive shrubs
