Deno’s Garden

Cotoneaster horizontalis

Genus Cotoneaster

This source reports 6 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Moderate 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. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Temperature: 40°F 4°C

about 6 months from start to sowing. Germination time not stated; 21 days assumed.

55% germination.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cotoneaster p. 126Public domain
Show the original text
Cotoneaster (Rosaceae). C. horizontalis germ. 70-40-70(50% in 2nd d) and 40(20%)-70-40-70(40%)- 40(5%)-70-40-70. Seed DS 6 m at 70 germ. 70(9%)-40(9%)-70(55%) and 40(55%). Seed DS 6 m at 40 germ. 70-40-70-40(55%) and 40-70(55%). Seed DS for one year at 40 germ. less and more extended.
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 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: 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. Germination time not stated; 21 days assumed.

55% 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. horizontalis germ. 70-40-70(50% in 2nd d) and 40(20%)-70-40-70(40%)- 40(5%)-70-40-70. Seed DS 6 m at 70 germ. 70(9%)-40(9%)-70(55%) and 40(55%). Seed DS 6 m at 40 germ. 70-40-70-40(55%) and 40-70(55%). Seed DS for one year at 40 germ. less and more extended.
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 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

    9 germinated in this phase.

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    9 germinated in this phase.

  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.

55% 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. horizontalis germ. 70-40-70(50% in 2nd d) and 40(20%)-70-40-70(40%)- 40(5%)-70-40-70. Seed DS 6 m at 70 germ. 70(9%)-40(9%)-70(55%) and 40(55%). Seed DS 6 m at 40 germ. 70-40-70-40(55%) and 40-70(55%). Seed DS for one year at 40 germ. less and more extended.
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 September 22, 2026 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 21, 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

about 18 months from start to sowing. Germination time not stated; 21 days assumed.

55% 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. horizontalis germ. 70-40-70(50% in 2nd d) and 40(20%)-70-40-70(40%)- 40(5%)-70-40-70. Seed DS 6 m at 70 germ. 70(9%)-40(9%)-70(55%) and 40(55%). Seed DS 6 m at 40 germ. 70-40-70-40(55%) and 40-70(55%). Seed DS for one year at 40 germ. less and more extended.
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 July 8, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on July 7, 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

about 9 months from start to sowing. Then 2 days to germinate.

50% germination in 2 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cotoneaster p. 126Public domain
Show the original text
Cotoneaster (Rosaceae). C. horizontalis germ. 70-40-70(50% in 2nd d) and 40(20%)-70-40-70(40%)- 40(5%)-70-40-70. Seed DS 6 m at 70 germ. 70(9%)-40(9%)-70(55%) and 40(55%). Seed DS 6 m at 40 germ. 70-40-70-40(55%) and 40-70(55%). Seed DS for one year at 40 germ. less and more extended.
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 6

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. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    20 germinated in this phase.

  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

    5 germinated in this phase.

  6. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  7. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  8. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

Steps after step 4 run on after germination.

about 12 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. horizontalis germ. 70-40-70(50% in 2nd d) and 40(20%)-70-40-70(40%)- 40(5%)-70-40-70. Seed DS 6 m at 70 germ. 70(9%)-40(9%)-70(55%) and 40(55%). Seed DS 6 m at 40 germ. 70-40-70-40(55%) and 40-70(55%). Seed DS for one year at 40 germ. less and more extended.
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.