Deno’s Garden

Cochlearia officinalis

Genus Cochlearia

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty Moderate Rated by us, not by the source.

Start around March 31, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 5 days to germinate.

60% germination in 3–5 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Cochlearia p. 32Public domain
Show the original text
Cochlearia (Brassicaceae). C. officinalis germ. 70L(60% largely in 3-5 d), 70D(2%), and 40(10% in 4-7 w)-70-40. Seeds DS 1 y germ. 32% in 4-8 d in either 70L or 70D indicating both some dying and disappearance of the light requirement.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Cochlearia p. 32. 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 High Rated by us, not by the source.

Start around November 17, 2026 for a May 3 last frost.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

Steps after step 1 run on after germination.

about 3 months from start to sowing. Then 49 days to germinate.

10% germination in 28–49 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Cochlearia p. 32Public domain
Show the original text
Cochlearia (Brassicaceae). C. officinalis germ. 70L(60% largely in 3-5 d), 70D(2%), and 40(10% in 4-7 w)-70-40. Seeds DS 1 y germ. 32% in 4-8 d in either 70L or 70D indicating both some dying and disappearance of the light requirement.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Cochlearia p. 32. 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, 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: dark

No stated waiting before sowing. Germination time not stated; 21 days assumed.

2% germination.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Cochlearia p. 32Public domain
Show the original text
Cochlearia (Brassicaceae). C. officinalis germ. 70L(60% largely in 3-5 d), 70D(2%), and 40(10% in 4-7 w)-70-40. Seeds DS 1 y germ. 32% in 4-8 d in either 70L or 70D indicating both some dying and disappearance of the light requirement.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Cochlearia p. 32. 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.