Pot Size: 3.5"
Accepted Scientific Name: Adenium obesum
Origin and Habitat:
Adenium obesum originates from arid and semi-arid regions across sub-Saharan Africa and the Arabian Peninsula. In these native areas, it grows in rocky and sandy soils that allow excellent drainage and minimal organic matter. The species is highly adapted to withstand prolonged drought by storing water in its swollen caudex, which provides resilience against extreme heat and irregular rainfall. Its natural habitats are exposed, sun-drenched landscapes where competition from other vegetation is low and survival depends on efficient water storage and tolerance to poor soils.
Description:
The border-flowered form of Adenium obesum is a unique succulent shrub displaying a sculptural caudex that may grow 6 to 20 inches across in cultivation. Mature plants often reach 12 to 36 inches tall, with glossy, elliptic leaves concentrated at branch tips. The distinguishing feature of this variety is its spectacular trumpet-shaped blossoms, measuring 2 to 3 inches wide, with petals edged in a contrasting color that creates a bordered effect. The striking flowers, often blending white or pink with a deeper red or crimson outline, offer dramatic visual appeal against the fleshy green foliage and swollen trunk.
Cultivation:
Zone: Suitable for Zones 10–11.
Temperature: Thrives at 20–35°C, must be protected from temperatures below 10°C.
Growth rate: Moderate to slow, dependent on light, temperature, and feeding.
Soil: Requires a fast-draining medium with pumice and perlite, avoiding heavy organic matter to reduce root rot risk.
Watering: Water thoroughly but let the soil dry fully between waterings. During cooler months, water sparingly as the plant enters dormancy.
Fertilizing: Apply diluted balanced fertilizer every 2–3 weeks during the growing and flowering season.
Light: Needs full sun or at least 6 hours of direct sunlight daily to encourage strong blooms.
Pests and Diseases: Susceptible to mealybugs, spider mites, and scale insects. Root rot is the most common problem in soils that retain excess moisture.
Propagation:
Adenium obesum border flower can be propagated from seed, which encourages diverse caudex development, or by stem cuttings, which root easily though often form smaller bases. Grafting is also widely practiced to preserve the bordered flower trait, ensuring consistent bloom coloration across new plants.
