A tuberous Gesneriaceae endemic to the sandstone cliffs of Paraná in southern Brazil, established under its current name by H.E. Moore in Baileya 19 (1973) and originally described as Rechsteineria leucotricha by Hoehne. Known in English as the "Brazilian edelweiss" — and as "Queen of the Cliffs" (断崖の女王) in Japanese — for the dense silvery-white wool that coats every leaf in soft velvet. Short stems rise from a half-buried tuber and, in late spring to early summer, carry tight clusters of coral-red tubular flowers. The aerial parts die back in autumn, leaving the bare tuber to overwinter — a distinctive rhythm that has made it one of the most beloved sinningias among caudex collectors.
Native climate
Rainfall is spread fairly evenly across the year. Overall a mild climate.
* Accurate distribution data is scarce for this species, so these values are taken from the climate near the approximate center of its native range instead.
Sources: climate & elevation WorldClim 2.1 (1970–2000) · occurrences GBIF · native range POWO · current weather Open-Meteo
Care
Light & Placement
In its home of Paraná's Campos Gerais, this species clings to sandstone cliffs and rocky ledges in bright, open light. Through the spring–autumn growing season, give it a half to full day of direct sun outdoors — strong light brings out the silver in the leaves and keeps stems short. In Japan's hot, humid midsummer, light afternoon shade (around 30%) and a raised bench for airflow help prevent leaf scorch and matting of the wool. Once the plant defoliates and enters dormancy, move it to a bright, unheated indoor window and keep it dry. Never expose the tuber to outdoor rain in winter — wet, cold soil rots it fast.
Watering
Restart slowly as new shoots emerge in spring; through active growth, water thoroughly once the surface dries. As leaves yellow and drop in autumn, taper off, and hold the tuber essentially dry through winter dormancy.
Substrate
Drainage first, inorganic-led: Akadama : Kanuma : pumice = 4:3:3. Plant with a third to half of the tuber sitting above the soil surface — it looks better and rots far less than a buried caudex.
Fertilizer & Supplements
Dilute liquid feed once or twice a month in active growth, or a pinch of slow-release at repotting. Overfeeding pushes the leaves out large and lanky and discourages flowering. Go light.
Temperature & Overwintering
Optimal 15–28°C, 5°C minimum. A bone-dry tuber tolerates close to 0°C, but damp soil under cold is fatal. Repot in mid-March to mid-April just before bud break. In hot Japanese summers, prioritize airflow to avoid heat-and-humidity stagnation.
Starting from Seed
Where to source seeds
links go directly to the product page; the rest are scientific-name searches. Stock fluctuates — verify availability on the destination site.
Pre-sowing treatment
The seeds are dust-fine — described as resembling pepper grains — sprinkled dry directly onto the substrate surface. A pre-soak is impractical at this size; instead, use 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, as the bottom-water tray after sowing. Viability fades quickly in storage, so sow as soon as the packet arrives.
Substrate
Fine-grained and near-sterile, with enough moisture retention for tiny seedlings: fine Akadama and vermiculite at roughly 1:1. Sterilize with boiling water or a microwave pass to head off damping-off.
Sowing method
Because the seeds are tiny, no covering at all — just dust them onto the surface. Spacing them one at a time with a toothpick tip makes later thinning much easier.
Light & temperature
Bright shade at 20–25°C. Germination is fast — some flushes break ground in 2 days, others take up to two weeks; give stragglers up to a month. 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. With seeds this small, the priority for the first month is never letting the substrate dry out — a clear lid to hold humidity helps.
Fertilizer
No feeding right after germination. Once several true leaves have emerged, give heavily diluted liquid fertilizer once or twice a month. Growth is brisk — the first sign of a tiny tuber appears within a few months.
From Germination to Repotting
Germination through true leaves
Continue bottom watering, avoid strong light.
Weaning off bottom watering
Transition gradually over 1–2 months.
First repotting
In the first year, once the plant is root-bound.
Common Pitfalls
Mold & damping-off
- Cause: excess moisture, contamination, dust-fine seed buried by water
- Prevention: sterilize substrate, surface-sow without covering, refresh bottom water often
Etiolation
- Cause: insufficient light, heat-and-humidity stagnation
- Prevention: bring LEDs closer right after germination, or move outdoors to bright shade. In active growth too, weak light stretches petioles and ruins the form
Seeds fail to germinate
- Cause: stale seed, insufficient warmth
- Prevention: fresh seed and 20–25°C on a heat mat
Notes
The silver wool on the leaves rubs off easily — handle gently.
