A caudiciform of the grape family endemic to the rocky slopes of the Naukluft Mountains in western central Namibia. The authority is (Hook.) Desc. — first described in 1864 as Vitis bainesii and transferred to Cyphostemma by Bernard Descoings in 1967. The epithet honours Thomas Baines, the British explorer and botanical artist who travelled across southern Africa and Australia. Heights stay at 1–2 m, and unlike its taller relative C. juttae the trunk is squat and bottle-shaped. Papery bark peels away to reveal grey-green skin, trifoliate leaves open through summer, and the plant carries small orange grape-like fruits — widely traded and a reliable starting point for caudex growers.
Native climate
Rain concentrates in the warm season, with a dry season of roughly 8 months. Overall mild, at high elevation.
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
In habitat, C. bainesii clings to dolomite and granite outcrops in the Naukluft Mountains at 1,200–1,800 m, often anchored at the base of boulders under unrelenting sun. In active growth, give it as much full light as possible; strong sun keeps the caudex tight and brings out the colour of the peeling bark. Through Japan's midsummer, light shading at 20–30% with the pot on a bench for airflow is the safer setting. Pot stagnation is the main risk, so keep it off the ground and let a fan move air through. Overwinter on a bright sunny window kept dry once the leaves drop.
Watering
In active growth, water deeply once the topsoil has dried completely, then dry it out fully again. Taper from autumn as the leaves drop, and go fully dry through dormancy.
Substrate
Drainage and air come first — an inorganic-led mix of Akadama : Kanuma : pumice = 4:3:3. A deeper pot with generous drainage gives the swelling caudex room to settle.
Fertilizer & Supplements
A diluted liquid feed once a month in active growth, or a pinch of slow-release at repotting. Pushing too hard stretches the branches and softens the bark texture — keep doses modest.
Temperature & Overwintering
Optimal 22–35°C, minimum around 5°C. Bone-dry plants tolerate brief cold, but damp soil under low temperature rots fast. Bring indoors only after a full dry-down.
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. The floaters are likely no longer viable.
Substrate
A fine-grained, near-sterile seedling mix: fine Akadama, fine Kanuma, vermiculite in 1:1:1 parts. Sterilize with boiling water or a microwave pass to keep damping-off down.
Sowing method
Sow with no covering, or only the thinnest dusting so the seeds remain partly visible. Space at least 1 cm apart so they don't clump on the surface.
Light & temperature
Bright shade at 25–30°C. Expect germination in 7–21 days. Germination depends strongly on seed freshness, but fresh seed tends to come up well.
Watering
Bottom-water with the level 1–2 cm up the pot. For the first 2–3 weeks prioritize not letting things dry out, then drop the level gradually once seedlings are stable.
Fertilizer
No feeding right after germination. Once true leaves open, give heavily diluted liquid fertilizer once or twice a month, modestly.
From Germination to Repotting
Germination through true leaves
Continue bottom watering, avoid strong light.
Weaning off bottom watering
Phase it out gradually over 1–2 months.
First repotting
In the first or second year, once roots have filled the pot.
Common Pitfalls
Mold & damping-off
- Cause: excess moisture, contamination, poor air flow
- Prevention: sterilize the substrate, refresh the bottom-water, run a circulation fan
Etiolation
- Cause: insufficient light
- Prevention: bring LEDs closer right after germination, or move the tray to bright shade outdoors
Seeds fail to germinate
- Cause: stale seed, insufficient warmth
- Prevention: source from reliable sellers and hold 25–30°C steady on a heat mat
Notes
Like other Vitaceae, Cyphostemma contains needle-like calcium oxalate crystals (raphides) that make the sap a skin and mucous-membrane irritant. Wear gloves when pruning or repotting, and treat the orange grape-like fruits as inedible.
