Source: Wikimedia Commons
Adenium obesum subsp. somalense
IntermediateAdenium obesum subsp. somalense
An Adenium recognised by its broad-based, conical caudex and narrow leaves with white veins. Flowers are smaller than those of A. obesum, under 5 cm across, with narrow pointed petals and red nectar guides.
About
Adenium somalense belongs to the dogbane family (Apocynaceae) and is treated by GBIF as a subspecies of Adenium obesum, the desert rose. It ranges from Somalia south through the Rift Valley into Kenya and Tanzania. In Somalia and north-western Kenya there are tree-like populations up to about 4.5 m tall with a very wide-based, conical caudex, the most reliable identifying feature. Across much of Kenya the plants are shrubbier with smaller caudices, apparently intergrading with A. obesum. Leaves are 5-10 cm long and 18-25 mm wide, bright green and usually white-veined. Flowers are pink to deep red, under 5 cm across, with narrow pointed petals and nectar guides that reach onto the petals. Most cultivated plants are the shrubby intergrade form; they have an obligate winter dormancy and do not re-leaf until spring flowering has peaked. The dwarf var. crispum from the same area forms a turnip-shaped underground caudex and has crisped, narrow leaves. In Japan it is sold as "Somalense" seedlings and rooted plants through online shops and auction sites, and locality seed is also offered.
Source: Wikipedia (CC BY-SA 4.0)
Size of the Adenium obesum subsp. somalense
The Adenium obesum subsp. somalense grows to Tree forms reach about 4.5 m in habitat; most cultivated plants are shrubby.
Basic Info
Origin
Somalia south through the Rift Valley to Kenya and Tanzania
Lifespan
Long-lived perennial (little published data on lifespan)
Size
Tree forms reach about 4.5 m in habitat; most cultivated plants are shrubby
Temperature
10〜35℃
Watering & Fertilizer
A little slow-release fertiliser in the growing season
Growing Tips
Light & Placement
Grow in full sun during the growing season. Seedlings of the tree form grow vigorously, so give plenty of light to prevent leggy stems.
Watering
Water thoroughly once the soil dries while the plant is in leaf. After leaf drop, withhold water and keep it on the dry side until new leaves appear in spring.
Dormancy Care
It has an obligate winter dormancy and may not re-leaf until spring flowering has peaked. Do not increase watering thinking it has died; wait for buds to move.
Temperature & Overwintering
It is frost-tender; overwinter it dry in a warm, frost-free room.
Soil & Repotting
Use a free-draining mix and repot when warm weather starts growth. Take care not to damage the thick roots.
Pests & Cautions
As a member of the dogbane family its sap is toxic. Wear gloves when pruning or repotting and keep it away from children and pets.
Adenium obesum subsp. somalense FAQ
QWhat is the growing difficulty level for Adenium obesum subsp. somalense?
Intermediate. A variety suitable for intermediate growers. Requires some cultivation experience and knowledge of environment management. Pay careful attention to temperature and humidity control.
QHow large does Adenium obesum subsp. somalense get?
The mature size of Adenium obesum subsp. somalense is Tree forms reach about 4.5 m in habitat; most cultivated plants are shrubby. This may vary slightly depending on cultivation environment and individual differences.
QHow should I water and fertilize Adenium obesum subsp. somalense?
Adenium obesum subsp. somalense: watering & fertilizer — A little slow-release fertiliser in the growing season. Aim for appropriate frequency and amount.
QWhat is the typical price for Adenium obesum subsp. somalense?
The price of Adenium obesum subsp. somalense varies significantly by variety, characteristics, size, and lineage. Please check GrowerDirect's price guide for the latest market information.
Last updated: September 23, 2026
References & Sources
Edited & verified by: GrowerDirect Editorial Team
The classifications, regulations, and growing data on this page are created and verified based on the primary information database below.
Taxonomy & Authority
Regulations & Conservation Status
Not listed in CITES (checked on Species+). No special procedure is needed for transfers within Japan.
Sources: Species+ (CITES): Adenium obesum
Regulations may change. Always verify the latest information with the relevant authorities.
Related Species
Find listings for this species
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