About the plant
What it is and where it grows — not part of any germination protocol.
- Habit
- tuberous geophytePlants of the World Online
- Flower
- LilacRead from the photograph on this page
- Native range
- Cape ProvincesGBIF Backbone Taxonomy
Toxicity is noted only where a source states it. No note here is not a finding of safety.
Sources: Plants of the World Online — Royal Botanic Gardens, Kew; Read from the photograph on this page — Deno's Garden; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.
This source reports 4 treatments. All are shown.
Protocol 1
DerivedN. C. Deno, 1998Difficulty Moderate Rated by us, not by the source.
Start around December 8, 2026 for a May 3 last frost.
- 1
Warm moist stratification
Duration: 90 days · Temperature: 70°F 21°C · Light: light
1/9 germinated in this phase.
- 2
Cold moist stratification
Duration: 90 days · Temperature: 40°F 4°C
about 3 months from start to step 2. Germination happens during step 2, in 28 days.
89% germination in 28 days.
Protocol 2
DerivedN. C. Deno, 1998Difficulty High Rated by us, not by the source.
Start around December 8, 2026 for a May 3 last frost.
- 1
Warm moist stratification
Duration: 90 days · Temperature: 70°F 21°C · Light: dark
2/13 germinated in this phase.
- 2
Cold moist stratification
Duration: 90 days · Temperature: 40°F 4°C
- 3
Warm moist stratification
Duration: 90 days · Temperature: 70°F 21°C · Light: dark
- 4
Cold moist stratification
Duration: 90 days · Temperature: 40°F 4°C
1/13 germinated in this phase.
Steps after step 2 run on after germination.
about 3 months from start to step 2. Germination happens during step 2, in 28 days.
38% germination in 28 days.
Protocol 3
DerivedN. C. Deno, 1998Difficulty High Rated by us, not by the source.
Start around December 8, 2026 for a May 3 last frost.
- 1
Warm moist stratification
Duration: 90 days · Temperature: 70°F 21°C · Light: dark
31 germinated in this phase.
- 2
Cold moist stratification
Duration: 90 days · Temperature: 40°F 4°C
- 3
Warm moist stratification
Duration: 90 days · Temperature: 70°F 21°C · Light: dark
- 4
Cold moist stratification
Duration: 90 days · Temperature: 40°F 4°C
3 germinated in this phase.
Steps after step 2 run on after germination.
about 3 months from start to step 2. Germination happens during step 2, in 28 days.
35% germination in 14–28 days.
Protocol 4
DerivedN. C. Deno, 1998Difficulty Very high Rated by us, not by the source.
Start around January 18, 2027 for a May 3 last frost.
- 1
Cold moist stratification
Temperature: 40°F 4°C
Germination happens during step 1, in 77 days.
8% germination in 77 days.
How each step is done, in Deno’s words, and what Verified and Derived mean.
Germination trials
Readers’ own records of sowing this species, published after review. Share your trial · All trials
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