Deno’s Garden

Maianthemum racemosum

Genus Maianthemum

This source reports 4 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around January 24, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on January 23, 2026.

  1. Dry storage

    Duration: 180 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

about 12 months from start to sowing. Then 77 days to germinate.

90% germination in 28–77 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Smilacina p. 215Public domain
Show the original text
Smilacina (Liliaceae). S. racemosa germ. 40-70(90% in 4-11 w) and 70-40- 70(5%) using seed DS 6 m at 70 or 40. Fresh seed ultimately germ. 50-82%, but germination was much extended as shown by 40-70(25%)-40-70(25%) and 70(10%)- 40-70(14%)-40-70(3%)-40-70(55% in 4-6 w). Both DS and fresh seeds germ. far better when sown at 40 with DS seed best. Germination is hypogeal. The radicle was allowed to develop to its full three inches at 70. Shifting to 40 for 4 m and back to 70 caused stems and leaves to develop in 25% of the seedlings, but the remaining 75% did not develop and most of these ultimately died by rotting of the terminal bud. More work is needed in determining conditions for destroying the growth inhibitors in the terminal bud. Treatment with GA-3 blocked germination.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Smilacina p. 215. 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 High Rated by us, not by the source.

Start around June 3, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 2, 2025.

  1. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    10 germinated in this phase.

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    14 germinated in this phase.

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  5. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    3 germinated in this phase.

  6. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  7. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 1.5 years from start to sowing. Then 42 days to germinate.

55% germination in 28–42 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Smilacina p. 215Public domain
Show the original text
Smilacina (Liliaceae). S. racemosa germ. 40-70(90% in 4-11 w) and 70-40- 70(5%) using seed DS 6 m at 70 or 40. Fresh seed ultimately germ. 50-82%, but germination was much extended as shown by 40-70(25%)-40-70(25%) and 70(10%)- 40-70(14%)-40-70(3%)-40-70(55% in 4-6 w). Both DS and fresh seeds germ. far better when sown at 40 with DS seed best. Germination is hypogeal. The radicle was allowed to develop to its full three inches at 70. Shifting to 40 for 4 m and back to 70 caused stems and leaves to develop in 25% of the seedlings, but the remaining 75% did not develop and most of these ultimately died by rotting of the terminal bud. More work is needed in determining conditions for destroying the growth inhibitors in the terminal bud. Treatment with GA-3 blocked germination.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Smilacina p. 215. 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 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. 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

    25 germinated in this phase.

Steps after step 2 run on after germination.

about 6 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, Smilacina p. 215Public domain
Show the original text
Smilacina (Liliaceae). S. racemosa germ. 40-70(90% in 4-11 w) and 70-40- 70(5%) using seed DS 6 m at 70 or 40. Fresh seed ultimately germ. 50-82%, but germination was much extended as shown by 40-70(25%)-40-70(25%) and 70(10%)- 40-70(14%)-40-70(3%)-40-70(55% in 4-6 w). Both DS and fresh seeds germ. far better when sown at 40 with DS seed best. Germination is hypogeal. The radicle was allowed to develop to its full three inches at 70. Shifting to 40 for 4 m and back to 70 caused stems and leaves to develop in 25% of the seedlings, but the remaining 75% did not develop and most of these ultimately died by rotting of the terminal bud. More work is needed in determining conditions for destroying the growth inhibitors in the terminal bud. Treatment with GA-3 blocked germination.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Smilacina p. 215. 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 Very 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. Dry storage

    Duration: 180 daysTemperature: 70°F 21°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

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

5% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Smilacina p. 215Public domain
Show the original text
Smilacina (Liliaceae). S. racemosa germ. 40-70(90% in 4-11 w) and 70-40- 70(5%) using seed DS 6 m at 70 or 40. Fresh seed ultimately germ. 50-82%, but germination was much extended as shown by 40-70(25%)-40-70(25%) and 70(10%)- 40-70(14%)-40-70(3%)-40-70(55% in 4-6 w). Both DS and fresh seeds germ. far better when sown at 40 with DS seed best. Germination is hypogeal. The radicle was allowed to develop to its full three inches at 70. Shifting to 40 for 4 m and back to 70 caused stems and leaves to develop in 25% of the seedlings, but the remaining 75% did not develop and most of these ultimately died by rotting of the terminal bud. More work is needed in determining conditions for destroying the growth inhibitors in the terminal bud. Treatment with GA-3 blocked germination.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Smilacina p. 215. 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.