A multi-stemmed, deciduous shrub to small tree of the sandy savanna, mopaneveld, and bushveld stretching from northern South Africa across southern Zimbabwe, Botswana, Namibia, Mozambique, and Eswatini. Its short branchlets end in sharp thorns — a feature distinct even within the thorny end of the genus — and it is widely known by the common names "common corkwood" and "kanniedood," Afrikaans for "cannot die." A slowly thickening, caudex-like trunk, peeling greyish bark, and the bare framework of branches through the dry season give old plants the weathered character collectors look for. Seed turns up steadily in trade, making this one of the most accessible entry points into Commiphora. The IUCN lists it as Least Concern.
Native climate
Rain concentrates in the warm season, with a dry season of roughly 5 months. Overall mild, with a wide temperature range.
A broad-scale picture of the native range. Real growing spots — rock crevices, fog belts — can be milder.
Sources: climate & elevation WorldClim 2.1 (1970–2000) · occurrences GBIF · native range POWO
Care
Light & Placement
A species of sandy southern African savanna shaped by strong sun and a dry winter, asking for bright light year-round. Place outdoors in full sun through the growing season — bright light keeps the canopy compact and supports thorn substance. The plant is relatively heat-tolerant in Japanese summer, though on the very hottest days a touch of afternoon shade prevents leaf burn. Humidity is a weakness, so shelter from rain by keeping it under eaves. Bring indoors to a bright window before temperatures fall below 8°C. Airflow matters year-round.
Watering
In active growth, soak thoroughly once the topsoil has fully dried, then dry the surface quickly with good airflow. Withhold water completely through winter dormancy.
Substrate
A sharply draining inorganic mix: akadama : kanuma : pumice at 4:3:3. To echo the sandy savanna habitat, sift out fines to keep the substrate from compacting.
Fertilizer & Supplements
A dilute liquid fertilizer once a month during active growth. Excess nitrogen invites etiolation and weak thorns, so lean toward phosphorus and keep amounts modest.
Temperature & Overwintering
Optimal 20–35°C, with a broad temperature tolerance for the genus. Aim for an 8°C floor; brief dips below 5°C bring black blotches and soft rot. Hold fully dry indoors in a bright, warm spot through winter, and keep the plant away from cold windows on freezing nights.
Starting from Seed
Where to source seeds
Pre-sowing treatment
Soak seeds for about 7 hours in a mix of a registered seed-treatment fungicide (Benlate or Daconil) and a plant tonic (Menedael; outside Japan, SUPERthrive or a chelated iron / seaweed extract works similarly), each diluted per label. Freshness strongly governs germination — old seed lots may turn out to be empty, so source recent seed and sow promptly.
Substrate
A fine-grained inorganic mix — fine akadama and fine hyuga at roughly equal parts. Sterilize with boiling water or a brief microwave pass before sowing.
Sowing method
Level the surface and lay seeds on their sides. Cover with the thinnest dusting of substrate, just enough that the seeds remain faintly visible.
Light & temperature
Bright shade out of direct sun, with temperatures held at 25–32°C. Germination takes 7–21 days. Germination depends strongly on seed freshness, but fresh seed tends to come up well. A heat mat helps stabilize temperatures.
Watering
Bottom-water continuously until germination to keep the mix evenly moist. Once seedlings are up, shift to shallow bottom watering.
Fertilizer
Once two or three true leaves have emerged, apply a liquid feed diluted to less than half strength, monthly. Stronger doses burn fine roots.
From Germination to Repotting
Germination through true leaves
Continue bottom watering and keep humidity up.
Weaning off bottom watering
Wean gradually over 1–2 months.
First repotting
Year 1–2, once roots have filled the pot.
Common Pitfalls
Mold & damping-off
- Cause: Excess moisture, microbes, exposure to rain
- Prevention: Sterilize the substrate, ensure ventilation, shelter under eaves
Etiolation
- Cause: Low light, excess fertilizer
- Prevention: Full sun in growing season, keep nitrogen low
Seeds not germinating
- Cause: Stale seed, insufficient heat
- Prevention: Use fresh seed, use a heat mat
Notes
Sharp branchlet thorns warrant care when handling. The sap is mildly toxic. Soft rot appears below 5°C.
