Deno’s Garden

Prunus serrulata

Genus Prunus

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around September 25, 2026 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 24, 2025.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 7 days

    Washed and cleaned daily for 7 days.

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    4 germinated in this phase.

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    7 germinated in this phase.

  5. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    7 germinated in this phase.

  6. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    27 germinated in this phase.

  7. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  8. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  9. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  10. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    4 germinated in this phase.

Steps after step 8 run on after germination.

about 1.5 years from start to sowing. Then 11 days to germinate.

29% germination in 4–11 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Prunus p. 201Public domain
Show the original text
Prunus (Rosaceae). All seed was WC for 7 d. P. serrulata germ. 70-40(2%)-70(15%)-40(15%)-70(15%)-40-70(15%)-40- 70(8%) and 40(4%)-70(7%)-40(7%)-70(27%)-40-70(29% in 4-11 d)-40-70(4%). Seed WC and DS 6 m at 70 or 40 gave results similar to fresh seed;
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Prunus p. 201. 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 12, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 11, 2026.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 7 days

    Washed and cleaned daily for 7 days.

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    2 germinated in this phase.

  5. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  6. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    15 germinated in this phase.

  7. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    15 germinated in this phase.

  8. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  9. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    15 germinated in this phase.

  10. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  11. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    8 germinated in this phase.

Steps after step 5 run on after germination.

about 9 months from start to sowing. Germination time not stated; 21 days assumed.

15% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Prunus p. 201Public domain
Show the original text
Prunus (Rosaceae). All seed was WC for 7 d. P. serrulata germ. 70-40(2%)-70(15%)-40(15%)-70(15%)-40-70(15%)-40- 70(8%) and 40(4%)-70(7%)-40(7%)-70(27%)-40-70(29% in 4-11 d)-40-70(4%). Seed WC and DS 6 m at 70 or 40 gave results similar to fresh seed;
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Prunus p. 201. 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.