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Gentiana asclepiadea

Willow Gentian

Family GentianaceaeGenus Gentiana

A cluster of blue trumpet flowers with pointed lobes, their pale throats freckled with dark spots, among narrow green leaves.
FlowerAndré Karwath aka AkaCC BY-SA 2.5

About the plant

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

Habit
perennialPlants of the World Online
Flower
Deep blueWikipedia
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; Wikipedia — Wikipedia contributors; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Worth knowing

  • The willow gentian is one of the larger gentians, its stems arching elegantly outward 60 to 90 cm from the base, with trumpet-shaped deep blue flowers. It grows mainly in mountain woodland in central and eastern Europe. Wikipedia: Gentiana asclepiadea

This source reports two treatments. Both are shown.

Protocol 1

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, Gentiana p. 45Public domain
Show the original text
Gentiana (Gentianaceae). !s st'mulat.on by GA-3, light, and oscillating T, but there is ^i ls anifican germination in70D. About half the seeds died afte'r 1 y G. asclepiadea germ. 70L(1/30) and none in 70D or 70 GA-3
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Gentiana 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

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing.

0% germination.

Nothing germinated at 70.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Gentiana p. 45Public domain
Show the original text
Gentiana (Gentianaceae). !s st'mulat.on by GA-3, light, and oscillating T, but there is ^i ls anifican germination in70D. About half the seeds died afte'r 1 y G. asclepiadea germ. 70L(1/30) and none in 70D or 70 GA-3
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Gentiana p. 45. Quoted exactly. Every value on this card comes from this record; 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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