Deno’s Garden

Prunus avium

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 October 26, 2026 for a May 3 last frost. Too late for spring 2027 — that needed starting on October 25, 2025.

  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

    10 germinated in this phase.

  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

    3 germinated in this phase.

Steps after step 5 run on after germination.

about 15 months from start to sowing. Then 77 days to germinate.

40% germination in 77 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. avium var. juliaria germ. 70-40-70(10%)-70-40(40% in 11th w)-70(3%) and 40-70-40-70(5%)-40-70(5%). Seeds DS for 6 m at 70 were dead.
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 Very 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. 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

  6. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    5 germinated in this phase.

Steps after step 4 run on after germination.

about 12 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, Prunus p. 201Public domain
Show the original text
Prunus (Rosaceae). All seed was WC for 7 d. P. avium var. juliaria germ. 70-40-70(10%)-70-40(40% in 11th w)-70(3%) and 40-70-40-70(5%)-40-70(5%). Seeds DS for 6 m at 70 were dead.
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.