Pot Size: 3.5"
Accepted Scientific Name: Adenium obesum
Origin and Habitat:
Adenium obesum is native to arid and semi-arid regions of sub-Saharan Africa and the Arabian Peninsula. In these environments, the plant thrives in rocky or sandy soils with high drainage and limited organic matter. It is well adapted to hot climates with intense sunlight and minimal rainfall, surviving long dry seasons by storing water in its thick caudex. This adaptation allows it to withstand drought and heat stress, making it ideal for cultivation in warm, dry climates where light is abundant.
Description:
The red-flowered form of Adenium obesum is a striking succulent shrub characterized by its swollen, sculptural caudex, which may grow 6 to 20 inches across. Mature plants typically reach 12 to 36 inches in height, depending on conditions. The glossy green leaves cluster at the stem tips, providing a lush contrast to the thick, gray-green trunk. During the flowering season, clusters of bright red, trumpet-shaped blossoms measuring 2 to 3 inches across appear in profusion, making this plant a vibrant focal point in any collection.
Cultivation:
Zone: Best suited for Zones 10–11.
Temperature: Optimal growth occurs between 20–35°C. Protect from temperatures below 10°C.
Growth rate: Moderate to slow, varying with warmth, feeding, and light exposure.
Soil: Requires fast-draining soil with pumice, perlite, and low organic content to prevent rot.
Watering: Water deeply but allow soil to dry completely before watering again. Watering should be reduced in cooler months during dormancy.
Fertilizing: Apply diluted, balanced fertilizer every 2–3 weeks during active growth and bloom periods.
Light: Requires full sun or at least 6 hours of direct light per day for strong flowering.
Pests and Diseases: Common pests include mealybugs, spider mites, and scale insects. Root rot is a frequent issue in poorly drained soils.
Propagation:
Adenium obesum can be propagated from seed, which produces plants with diverse caudex forms, or from stem cuttings, which root easily but may develop less prominent caudexes. Grafting is frequently used to preserve and propagate desirable flower colors such as the deep red varieties.
