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Crepis sibirica

Siberian Hawksbeard

Family AsteraceaeGenus Crepis

Yellow dandelion-like flower heads with narrow ragged rays, several open on a branching stem, one carrying a small hoverfly.
FlowerKrzysztof Ziarnek, KenraizCC BY-SA 4.0

About the plant

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

Habit
perennialPlants of the World Online
Flower
YellowWikipedia
Native range
Abkhaziya, Adzhariya, Altay, Armenia, Azerbaijan, Buryatiya 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.

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty High Rated by us, not by the source.

Start around October 3, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on October 2, 2026.

  1. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: dark

    20 germinated in this phase.

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    5 germinated in this phase.

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: dark

about 6 months from start to step 3. Germination happens during step 3, in 5 days.

32% germination in 3–5 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Crepis p. 34Public domain
Show the original text
Crepis (Asteraceae). C. sibiricus germ. 70D(20% in 1-3 w)-40(5%)- 70D(32% in 3-5 d). Seeds DS 1 y germ. 70D(3% on 10th d) showing much dying.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Crepis p. 34. 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 27, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 26, 2026.

  1. Dry storage

    Duration: 365 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

about 12 months from start to sowing. Then 10 days to germinate.

3% germination in 10 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Crepis p. 34Public domain
Show the original text
Crepis (Asteraceae). C. sibiricus germ. 70D(20% in 1-3 w)-40(5%)- 70D(32% in 3-5 d). Seeds DS 1 y germ. 70D(3% on 10th d) showing much dying.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Crepis p. 34. 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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