Pot Size: 3.5"
Accepted Scientific Name: Adenium obesum
Origin and Habitat:
Adenium obesum is native to arid regions of sub-Saharan Africa and the Arabian Peninsula, where it thrives in sandy, rocky soils with minimal organic matter. In these environments, it endures high daytime heat and extended dry periods, relying on its swollen caudex to store water for survival. The plant often grows in open, sun-drenched habitats where rainfall is scarce and evaporation is intense. Its adaptation to extreme climates makes it ideal for cultivation in warm, dry areas with ample light.
Description:
Adenium obesum with white flowers is a striking succulent shrub featuring a thick, sculptural caudex that can reach 6 to 20 inches across in cultivation. Mature plants may grow 12 to 36 inches tall, depending on conditions. The smooth, gray-green stems bear glossy, elliptic leaves at the tips. In flowering season, the plant produces clusters of trumpet-shaped blooms, each around 2 to 3 inches wide, in pure white, creating an elegant contrast against the fleshy green foliage and swollen stem.
Cultivation:
Zone: Best grown in Zones 10–11.
Temperature: Prefers 20–35°C and should be protected from temperatures below 10°C.
Growth rate: Moderate to slow, depending on warmth, light, and feeding.
Soil: Requires a fast-draining soil mix with pumice, perlite, and minimal organic matter to prevent rot.
Watering: Water thoroughly but allow soil to dry completely between waterings. Reduce water in cooler months during dormancy.
Fertilizing: Apply a diluted balanced fertilizer every 2–3 weeks during active growth and flowering.
Light: Needs full sun or at least 6 hours of bright, direct light daily to bloom well.
Pests and Diseases: Can be affected by mealybugs, spider mites, and scale. Root rot is a common issue if soil is not fast-draining.
Propagation:
Propagation is typically achieved through seeds, which produce plants with varied caudex forms, or stem cuttings, which root readily but often develop a less pronounced base. Grafting is also common in horticultural practice to preserve desirable flower traits.
