Deno’s Garden

Brimeura amethystina

Genus Brimeura

Two sources report 8 treatments between them. All are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty Moderate Rated by us, not by the source.

Start around June 19, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 18, 2026.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

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

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 9 months from start to sowing. Then 21 days to germinate.

100% germination in 21 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Brimeura p. 26Public domain
Show the original text
Brimeura (LHfaceae). B. amethystina optimum conditions can now be completed: 40-70(3%)-40(92% in 5-7 w)-70-40-70-40(5%). B. amethystina alba germ. 70L-40(90% in 4-9 w), 70D-40(20% in 2nd w), 70 GA- 3(10%)-40(15%), 40-70D-40(100% in 3rd w), and 40-70L-40(70% in 3rd w).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Brimeura p. 26. 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 September 23, 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

about 6 months from start to sowing. Then 14 days to germinate.

20% germination in 14 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Brimeura p. 26Public domain
Show the original text
Brimeura (LHfaceae). B. amethystina optimum conditions can now be completed: 40-70(3%)-40(92% in 5-7 w)-70-40-70-40(5%). B. amethystina alba germ. 70L-40(90% in 4-9 w), 70D-40(20% in 2nd w), 70 GA- 3(10%)-40(15%), 40-70D-40(100% in 3rd w), and 40-70L-40(70% in 3rd w).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Brimeura p. 26. 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 Moderate Rated by us, not by the source.

Start around May 22, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on May 21, 2026.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    3 germinated in this phase.

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  5. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  6. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  7. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    5 germinated in this phase.

Steps after step 3 run on after germination.

about 9 months from start to sowing. Then 49 days to germinate.

92% germination in 35–49 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Brimeura p. 26Public domain
Show the original text
Brimeura (LHfaceae). B. amethystina optimum conditions can now be completed: 40-70(3%)-40(92% in 5-7 w)-70-40-70-40(5%). B. amethystina alba germ. 70L-40(90% in 4-9 w), 70D-40(20% in 2nd w), 70 GA- 3(10%)-40(15%), 40-70D-40(100% in 3rd w), and 40-70L-40(70% in 3rd w).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Brimeura p. 26. 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 4

DerivedN. C. Deno, 1996

Difficulty Moderate Rated by us, not by the source.

Start around June 19, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 18, 2026.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

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

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 9 months from start to sowing. Then 21 days to germinate.

70% germination in 21 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Brimeura p. 26Public domain
Show the original text
Brimeura (LHfaceae). B. amethystina optimum conditions can now be completed: 40-70(3%)-40(92% in 5-7 w)-70-40-70-40(5%). B. amethystina alba germ. 70L-40(90% in 4-9 w), 70D-40(20% in 2nd w), 70 GA- 3(10%)-40(15%), 40-70D-40(100% in 3rd w), and 40-70L-40(70% in 3rd w).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Brimeura p. 26. 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 5

DerivedN. C. Deno, 1996

Difficulty High Rated by us, not by the source.

Start around September 17, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 16, 2026.

  1. Gibberellic acid soak

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    10 germinated in this phase.

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 6 months from start to sowing. Germination time not stated; 21 days assumed.

15% germination.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Brimeura p. 26Public domain
Show the original text
Brimeura (LHfaceae). B. amethystina optimum conditions can now be completed: 40-70(3%)-40(92% in 5-7 w)-70-40-70-40(5%). B. amethystina alba germ. 70L-40(90% in 4-9 w), 70D-40(20% in 2nd w), 70 GA- 3(10%)-40(15%), 40-70D-40(100% in 3rd w), and 40-70L-40(70% in 3rd w).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Brimeura p. 26. 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 6

DerivedN. C. Deno, 1996

Difficulty Moderate Rated by us, not by the source.

Start around August 6, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on August 5, 2026.

  1. Warm moist stratification

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

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 6 months from start to sowing. Then 63 days to germinate.

90% germination in 28–63 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Brimeura p. 26Public domain
Show the original text
Brimeura (LHfaceae). B. amethystina optimum conditions can now be completed: 40-70(3%)-40(92% in 5-7 w)-70-40-70-40(5%). B. amethystina alba germ. 70L-40(90% in 4-9 w), 70D-40(20% in 2nd w), 70 GA- 3(10%)-40(15%), 40-70D-40(100% in 3rd w), and 40-70L-40(70% in 3rd w).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Brimeura p. 26. 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 7

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around May 22, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on May 21, 2026.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    3 germinated in this phase.

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 9 months from start to sowing. Then 49 days to germinate.

92% germination in 35–49 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Brimeura p. 108Public domain
Show the original text
Brimeura (Lillaceae). B. amethystina germ. best in 40-70(3%)-40(92% in 5- 7 w) and less in 70(3%)-40-70-40. Starting at 40 is much superior to starting at 70.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Brimeura p. 108. 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 8

DerivedN. C. Deno, 1993

Difficulty Very high Rated by us, not by the source.

Start around December 15, 2026 for a May 3 last frost.

  1. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  4. 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. Germination time not stated; 21 days assumed.

3% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Brimeura p. 108Public domain
Show the original text
Brimeura (Lillaceae). B. amethystina germ. best in 40-70(3%)-40(92% in 5- 7 w) and less in 70(3%)-40-70-40. Starting at 40 is much superior to starting at 70.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Brimeura p. 108. 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.