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Gentianella germanica

Chiltern-gentian

Family GentianaceaeGenus Gentianella

Violet trumpet flowers with pointed lobes and a fringed white throat, opening up a dark red stem in meadow grass.
FlowerBernd HaynoldCC BY 2.5

About the plant

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

Habit
biennialPlants of the World Online
Flower
Red-violetWikipedia

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; Wikipedia — Wikipedia contributors.

Worth knowing

  • A small, usually biennial gentian of chalky grassland. Britain's small population grows in the Chiltern Hills, where it is called the Chiltern gentian. Wikipedia: Gentianella germanica

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty Low Rated by us, not by the source.

Start around March 15, 2027 for a May 3 last frost.

  1. Gibberellic acid soak

  2. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 21 days to germinate.

79% germination in 7–21 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Gentianella p. 45Public domain
Show the original text
Gentianella (Gentianaceae). G campestris germ. 70 GA-3(56% in 5-11 w) and 10% in April in OT Nonp germ. in 70D, 70L, 40-70D, or 40-70L. Seeds DS 1 y were dead G. germanica germ. 70 GA-3(79%% in 1-3 w), 70L(3%), and 70D(none).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Gentianella p. 45. 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.

Protocol 2

DerivedN. C. Deno, 1996

Difficulty Very high 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. Germination time not stated; 21 days assumed.

3% germination.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Gentianella p. 45Public domain
Show the original text
Gentianella (Gentianaceae). G campestris germ. 70 GA-3(56% in 5-11 w) and 10% in April in OT Nonp germ. in 70D, 70L, 40-70D, or 40-70L. Seeds DS 1 y were dead G. germanica germ. 70 GA-3(79%% in 1-3 w), 70L(3%), and 70D(none).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Gentianella p. 45. 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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