About the plant
What it is and where it grows — not part of any germination protocol.
- Habit
- perennialPlants of the World Online
- Flower
- WhiteRead from the photograph on this page
- Native range
- Albania, Austria, Bulgaria, Corse, Czechia-Slovakia, France and elsewhereGBIF 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, 1996Difficulty Low Rated by us, not by the source.
Start around March 15, 2027 for a May 3 last frost.
- 1
Sow and cover
Temperature: 70°F 21°C · Light: light
No stated waiting before sowing. Then 21 days to germinate.
100% germination in 7–21 days.
Protocol 2
DerivedN. C. Deno, 1996Difficulty Low Rated by us, not by the source.
Start around February 15, 2027 for a May 3 last frost.
- 1
Sow and cover
Temperature: 70°F 21°C · Light: dark
No stated waiting before sowing. Then 49 days to germinate.
77% germination in 7–49 days.
Protocol 3
DerivedN. C. Deno, 1996- 1
Cold moist stratification
Temperature: 40°F 4°C
Germination happens during step 1.
0% germination.
Nothing germinated at 40.
This source doesn't state how long step 1 lasts.
Protocol 4
DerivedN. C. Deno, 1996Difficulty Very high Rated by us, not by the source.
- 1
Sow outdoors and leave it
Nothing germinated outdoors.
No stated waiting before sowing.
0% germination.
This source doesn't state how long step 1 lasts.
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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