A small Araliaceae tree ranging from KwaZulu-Natal, Mpumalanga and Limpopo through Eswatini, Mozambique and Zimbabwe, growing on rocky hills and grassland between roughly 1,400 and 1,700 m. The epithet refers to KwaZulu-Natal, and the common names are "rock cabbage tree" and "simple-leaved cabbage-tree". At 5–10 m it sits on the smaller side of the genus, and the leathery, deeply 3–5 lobed simple palmate leaves clustered at the branch tips set it apart at a glance from the twice-palmate compound foliage of spicata and paniculata. Deciduous and slightly frost-sensitive, it has a quiet following among caudex-plant keepers for the manageable pot size and the unmistakable leaf form.
Native climate
Rainfall is spread fairly evenly across the year. Overall a mild climate.
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 · current weather Open-Meteo
Care
Light & Placement
On the rocky outcrops and grasslands of KwaZulu-Natal at 1,400–1,700 m, this species lives in strong sun and steady dry wind. Give it full direct light through the active season — the trunk tightens, petioles stay short, and the leathery leaves hold their colour. Through Japan's midsummer, light shading at 20–30% with the pot raised on a bench helps avoid leaf burn and stagnant air. Bring it indoors as soon as the leaves drop, to a bright window away from rain. Frost-sensitive: never leave outside through a cold snap.
Watering
In active growth, wait for the topsoil to dry, then water thoroughly to swell the trunk. Don't let water sit in the saucer. Through dormancy, withhold water entirely or give only a small monthly drink to keep it dry through winter.
Substrate
Drainage and aeration first, inorganic-led. Akadama : Kanuma : pumice = 4:3:3 as a baseline. A deeper pot helps keep wet/dry cycles distinct and protects the caudex.
Fertilizer & Supplements
Diluted liquid feed once or twice a month in active growth, or a pinch of slow-release at repotting. Growth is on the slower side for the genus — go light and let the trunk thicken at its own pace.
Temperature & Overwintering
Optimal 22–32°C, 5°C minimum. Sensitive to frost and sustained cold; bring indoors as soon as it drops its leaves and overwinter on a bright window kept dry.
Starting from Seed
Where to source seeds
Pre-sowing treatment
Soak seeds for about half a day (overnight) 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. Floaters are usually past their prime. Storage conditions strongly affect viability, so sowing soon after receipt is the safer course.
Substrate
A fine-grained, near-sterile seedling mix: fine Akadama, fine Kanuma, vermiculite in 1:1:1 parts. A microwave or boiling-water pass beforehand is good insurance.
Sowing method
Sow with no covering, or only the thinnest dusting so seeds remain partly visible. Space at least 1 cm apart and avoid clumping.
Light & temperature
Bright shade or LED at 22–28°C. Expect germination in 14–30 days. Germination depends on seed freshness, but with fresh seed it is reasonably steady.
Watering
Bottom-water with the level 1–2 cm up the pot. For the first 2–3 weeks, don't let it dry; once germination is even, lower the water level in stages.
Fertilizer
No feeding right after germination. Once true leaves emerge, give heavily diluted liquid fertilizer once or twice a month. Keep the dose modest.
From Germination to Repotting
Germination through true leaves
Continue bottom watering, avoid strong light.
Weaning off bottom watering
Step down over one to two months.
First repotting
In year one or two, once root-bound.
Common Pitfalls
Mold & damping-off
- Cause: excess moisture, contamination, poor air flow
- Prevention: sterilize substrate, change bottom-water frequently
Etiolation
- Cause: insufficient light
- Prevention: bring LEDs closer right after germination, or move to bright shade outdoors
Seeds fail to germinate
- Cause: stale seed, insufficient warmth
- Prevention: fresh seed, heat mat to hold 22–28°C
Notes
Watch for frost and overwatering.
