Phemeranthus sediformis
Okanagan Fameflower · Okanagan Talinum · Okanogan Fameflower
Also published as Talinum okanoganense. You are in the right place.

About the plant
What it is and where it grows — not part of any germination protocol.
- Habit
- succulent subshrubPlants of the World Online
- Habit
- Perennial, Forb/herbPLANTS Database
- Flower
- WhiteFlora of North America
- Native range
- British Columbia, WashingtonGBIF 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; PLANTS Database — USDA NRCS; Flora of North America — Flora of North America Editorial Committee; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.
Worth knowing
- Found only in the Okanagan Highlands and Kettle River Range of Washington and British Columbia. John Jeffrey collected it in 1851, but it was not named until 1933–34. Wikipedia: Phemeranthus sediformis
This source reports two treatments. Both are shown.
Protocol 1
DerivedN. C. Deno, 1993Difficulty Moderate
Start around January 11, 2027 for a May 3 last frost.
Cold moist stratification
Temperature: 40°F 4°C
48%, at 10-12 weeks -- it germinates in the cold.
Warm moist stratification
Temperature: 70°F 21°C
A further 36%, over 2-16 days.
Germination happens during step 2, in 84 days.
48% germination in 70–84 days.
Nearly half comes up in the cold itself, and a third more again after the move.
This source doesn't state how long step 1 lasts.
Protocol 2
DerivedN. C. Deno, 1993Sow and cover
Temperature: 70°F 21°C
Nothing.
No stated waiting before sowing.
0% germination.
Nothing at all. Deno's rule for the genus holds here: sowing at 40 beats sowing at 70.
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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