Deno’s Garden

Colchicum bulbocodium

Genus Colchicum

This source reports 5 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around January 31, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on January 30, 2026.

  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

about 12 months from start to sowing. Then 70 days to germinate.

83% germination in 49–70 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Bulbocodium p. 108Public domain
Show the original text
Bulbocodium (Llliaceae). B. vernum germ. best with fresh seed in 70-40-70- 40(5/6 in 7-10 w). Germination is hypogeal. It is best to keep the seedlings at 40 until the true leaf is well started before shifting to 70. Fresh seed sown at 40 germ. 40-70- 40-70-40(1/6). DS is not tolerated well as shown by 40-70(1/3) and 70(none) for seed 05 6 m at 70 and 70-40(1/4) and 40(none in 2 y of alternating cyles) for seed DS 6 m at 40.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Bulbocodium 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 2

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around April 11, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on April 10, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 40°F 4°C

  2. Sow and cover

    Temperature: 70°F 21°C

about 6 months from start to sowing. Then 180 days to germinate.

33% germination in 180 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Bulbocodium p. 108Public domain
Show the original text
Bulbocodium (Llliaceae). B. vernum germ. best with fresh seed in 70-40-70- 40(5/6 in 7-10 w). Germination is hypogeal. It is best to keep the seedlings at 40 until the true leaf is well started before shifting to 70. Fresh seed sown at 40 germ. 40-70- 40-70-40(1/6). DS is not tolerated well as shown by 40-70(1/3) and 70(none) for seed 05 6 m at 70 and 70-40(1/4) and 40(none in 2 y of alternating cyles) for seed DS 6 m at 40.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Bulbocodium 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 3

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around March 21, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 20, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 40°F 4°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 12 months from start to sowing. Germination time not stated; 21 days assumed.

33% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Bulbocodium p. 108Public domain
Show the original text
Bulbocodium (Llliaceae). B. vernum germ. best with fresh seed in 70-40-70- 40(5/6 in 7-10 w). Germination is hypogeal. It is best to keep the seedlings at 40 until the true leaf is well started before shifting to 70. Fresh seed sown at 40 germ. 40-70- 40-70-40(1/6). DS is not tolerated well as shown by 40-70(1/3) and 70(none) for seed 05 6 m at 70 and 70-40(1/4) and 40(none in 2 y of alternating cyles) for seed DS 6 m at 40.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Bulbocodium 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 4

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around March 21, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 20, 2026.

  1. Dry storage

    Duration: 180 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

about 12 months from start to sowing. Germination time not stated; 21 days assumed.

25% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Bulbocodium p. 108Public domain
Show the original text
Bulbocodium (Llliaceae). B. vernum germ. best with fresh seed in 70-40-70- 40(5/6 in 7-10 w). Germination is hypogeal. It is best to keep the seedlings at 40 until the true leaf is well started before shifting to 70. Fresh seed sown at 40 germ. 40-70- 40-70-40(1/6). DS is not tolerated well as shown by 40-70(1/3) and 70(none) for seed 05 6 m at 70 and 70-40(1/4) and 40(none in 2 y of alternating cyles) for seed DS 6 m at 40.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Bulbocodium 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 5

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around December 21, 2026 for a May 3 last frost. Too late for spring 2027 — that needed starting on December 20, 2025.

  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

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  5. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 15 months from start to sowing. Germination time not stated; 21 days assumed.

17% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Bulbocodium p. 108Public domain
Show the original text
Bulbocodium (Llliaceae). B. vernum germ. best with fresh seed in 70-40-70- 40(5/6 in 7-10 w). Germination is hypogeal. It is best to keep the seedlings at 40 until the true leaf is well started before shifting to 70. Fresh seed sown at 40 germ. 40-70- 40-70-40(1/6). DS is not tolerated well as shown by 40-70(1/3) and 70(none) for seed 05 6 m at 70 and 70-40(1/4) and 40(none in 2 y of alternating cyles) for seed DS 6 m at 40.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Bulbocodium 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.