Deno’s Garden

Cotoneaster dammeri

Genus Cotoneaster

This source reports 5 treatments. All are shown.

Protocol 1

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. 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

  5. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  6. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    4 germinated in this phase.

Steps after step 4 run on after germination.

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

43% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cotoneaster p. 126Public domain
Show the original text
Cotoneaster (Rosaceae). C. dammed germ. over a number of cycles usiñgeither fresh seed or DS seed. No dominant pattern emerged. Fresh seed germ. 40(20%)-70(3%)-40-70(20%) and none over five cycles starting at 70. Seed DS 6 m at 70 germ. 70(10%)-40-70(20%) and 40(40%)-70(5%)-40-70. Seed DS 6 m at 40 germ. 70-40-70(43%)-40-70(4%) and 40(4%)-70-40(17%)-70-40-70(8%).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cotoneaster p. 126. 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 19, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 18, 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

    5 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

Steps after step 2 run on after germination.

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

40% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cotoneaster p. 126Public domain
Show the original text
Cotoneaster (Rosaceae). C. dammed germ. over a number of cycles usiñgeither fresh seed or DS seed. No dominant pattern emerged. Fresh seed germ. 40(20%)-70(3%)-40-70(20%) and none over five cycles starting at 70. Seed DS 6 m at 70 germ. 70(10%)-40-70(20%) and 40(40%)-70(5%)-40-70. Seed DS 6 m at 40 germ. 70-40-70(43%)-40-70(4%) and 40(4%)-70-40(17%)-70-40-70(8%).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cotoneaster p. 126. 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 December 15, 2026 for a May 3 last frost.

  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

    20 germinated in this phase.

Steps after step 1 run on after germination.

about 3 months from start to sowing. Germination time not stated; 21 days assumed.

20% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cotoneaster p. 126Public domain
Show the original text
Cotoneaster (Rosaceae). C. dammed germ. over a number of cycles usiñgeither fresh seed or DS seed. No dominant pattern emerged. Fresh seed germ. 40(20%)-70(3%)-40-70(20%) and none over five cycles starting at 70. Seed DS 6 m at 70 germ. 70(10%)-40-70(20%) and 40(40%)-70(5%)-40-70. Seed DS 6 m at 40 germ. 70-40-70(43%)-40-70(4%) and 40(4%)-70-40(17%)-70-40-70(8%).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cotoneaster p. 126. 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 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

    10 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

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

20% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cotoneaster p. 126Public domain
Show the original text
Cotoneaster (Rosaceae). C. dammed germ. over a number of cycles usiñgeither fresh seed or DS seed. No dominant pattern emerged. Fresh seed germ. 40(20%)-70(3%)-40-70(20%) and none over five cycles starting at 70. Seed DS 6 m at 70 germ. 70(10%)-40-70(20%) and 40(40%)-70(5%)-40-70. Seed DS 6 m at 40 germ. 70-40-70(43%)-40-70(4%) and 40(4%)-70-40(17%)-70-40-70(8%).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cotoneaster p. 126. 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. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    4 germinated in this phase.

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  5. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  6. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  7. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    8 germinated in this phase.

Steps after step 4 run on after germination.

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, Cotoneaster p. 126Public domain
Show the original text
Cotoneaster (Rosaceae). C. dammed germ. over a number of cycles usiñgeither fresh seed or DS seed. No dominant pattern emerged. Fresh seed germ. 40(20%)-70(3%)-40-70(20%) and none over five cycles starting at 70. Seed DS 6 m at 70 germ. 70(10%)-40-70(20%) and 40(40%)-70(5%)-40-70. Seed DS 6 m at 40 germ. 70-40-70(43%)-40-70(4%) and 40(4%)-70-40(17%)-70-40-70(8%).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cotoneaster p. 126. 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.