Hildegardia barteri
Common Names: Kariya, Krobo Christmas Tree, African Buttercup Tree
Zones: 10B–11 (tropical lowland adaptation)
A tall, ornamental tree native to West Africa, Hildegardia barteri—locally known as Kariya—is valued for its bright dry-season flowers, edible seeds, and emerging potential in food and biofuel applications. Belonging to the Malvaceae family (subfamily Sterculioideae), it reaches up to 30 meters in height and produces one-seeded pods that mature between December and March. Though traditionally underutilized, recent studies highlight its nutritional, functional, and industrial promise.
Key Features
Growth Habit: Upright; columnar to spreading canopy; deciduous in dry season
Height: Typically 20–30 m (65–100 ft); trunk diameter up to 60 cm
Trunk: Straight; gray to brown bark; fissured with age
Leaves: Alternate; palmately compound; 5–7 lobes; rough texture
Inflorescence: Bright yellow to orange flowers; borne on leafless branches during dry season
Fruit: One-seeded pods (~5 cm); peanut-like kernels; drop when dry
Ecology: Native to tropical rainforests and savannas; adapted to seasonal drought
Growing Conditions
Light: Full sun
Watering: Moderate; drought-tolerant once established
Soil: Sandy to loamy; well-drained; tolerates poor soils
Temperature: Tolerates 40–100°F (4–38°C); thrives in 70–90°F (21–32°C)
Humidity: Moderate to high; adapted to tropical climates
Propagation: By seed; germinates readily; slow initial growth
Tolerance: Heat and drought tolerant; suitable for reforestation and agroforestry
🍽️ Ethnobotanical & Industrial Use
Edible Kernels: Consumed raw or roasted; used as condiments in traditional dishes
Flour Production: Heating and fermentation improve protein digestibility and reduce antinutrients
Oil Extraction: Rich in fatty acids (palmitic, oleic, linoleic); potential biodiesel feedstock
Engineering Properties: Kernels show promising thermal and physical traits for postharvest processing
Landscape & Restoration Use
Best suited for tropical agroforestry, ornamental dry-season displays, and reforestation projects. Its seasonal flowers and edible seeds offer both aesthetic and nutritional value. Pairs well with Parkia biglobosa, Vitex doniana, and Blighia sapida in West African native plantings.
