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Nigella orientalis

Yellow Nigella

Family RanunculaceaeGenus Nigella

Two dried star-shaped seed capsules split open beside a scatter of small round black seeds, with a one-centimeter scale bar.
SeedRoger CulosCC BY-SA 3.0

About the plant

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

Habit
annualPlants of the World Online
Native range
Bulgaria, East Aegean Is., Greece, Iran, Lebanon-Syria, Transcaucasus 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; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty Low Rated by us, not by the source.

Start around March 8, 2027 for a May 3 last frost.

  1. Cold moist stratification

    Temperature: 40°F 4°C

Germination happens during step 1, in 28 days.

100% germination in 28 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Nigella p. 50Public domain
Show the original text
Nigella (Ranunculaceae). Data is now more complete. N. orientalis germ. 70D(6/7 in 1-5 w, 5 on 10th d)-40(1/7 7th w), 70L(100% mainly on 9th d), and 40(100% in 4th w).
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Nigella p. 50. 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, 1998

Difficulty Low Rated by us, not by the source.

Start around March 27, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 9 days to germinate.

100% germination in 9 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Nigella p. 50Public domain
Show the original text
Nigella (Ranunculaceae). Data is now more complete. N. orientalis germ. 70D(6/7 in 1-5 w, 5 on 10th d)-40(1/7 7th w), 70L(100% mainly on 9th d), and 40(100% in 4th w).
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Nigella p. 50. 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 3

DerivedN. C. Deno, 1998

Difficulty Moderate Rated by us, not by the source.

Start around March 1, 2027 for a May 3 last frost.

  1. Warm moist stratification

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

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    1/7 germinated in this phase.

Steps after step 1 run on after germination.

Germination happens during step 1, in 35 days.

86% germination in 7–35 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Nigella p. 50Public domain
Show the original text
Nigella (Ranunculaceae). Data is now more complete. N. orientalis germ. 70D(6/7 in 1-5 w, 5 on 10th d)-40(1/7 7th w), 70L(100% mainly on 9th d), and 40(100% in 4th w).
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Nigella p. 50. 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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