Deno’s Garden

Nigella orientalis

Genus Nigella

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

No stated waiting before sowing. Then 28 days to germinate.

100% germination in 28 days.

This source doesn't state how long.

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 December 1, 2026 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.

about 3 months from start to sowing. Then 35 days to germinate.

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.