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Gentianopsis thermalis

Rocky Mountain Fringed Gentian · Feather Gentian

Family GentianaceaeGenus Gentianopsis

A violet-blue trumpet flower with fringed lobes, on a slender stem among bleached grass
Flowerbrewbooks from near Seattle, USACC BY-SA 2.0

About the plant

What it is and where it grows — not part of any germination protocol.

Habit
annual or biennialPlants of the World Online
Habit
Annual, Forb/herbPLANTS Database
Flower
Deep blue, blue-violetFlora of North America
Native range
Native to the lower 48 statesPLANTS Database

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.

Protocol

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 3 months from start to step 2. Germination happens during step 2, in 6 days.

15% germination in 4–6 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Gentianopsis p. 148Public domain
Show the original text
Gentianopsis (Gentianaceae). Light and GA-3 need to be tried. G. thermalis germ. 40-70(15% in 4-6 d) and none over three cycles when sown at 70. Photoexperiments and outdoor treatment need to be tried.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Gentianopsis p. 148. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

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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