Deno’s Garden

Hamamelis virginiana

Genus Hamamelis

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 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. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    18 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

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

63% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Hamamelis p. 150Public domain
Show the original text
Hamamelis (Hamamelidaceae). H. virginiana has a pattern of the seeds splitting during a cycle at 40 followed by a burst of germination in 14 d on shifting to 70. This pattern extends through many alternating cycles for both fresh and DS-seed. Fresh seed germ. 70-40(14%)-70(23%)-40-70(22%), 40(1%)-70(16%)-40(7%)- 70(15%)-40-70(16%), and 14% in April in outdoor treatment. Seed DS 6 m at 70 germ .70-40-70(37% in 0-8 w)-40-70(l 1 %) and 40-70(18%)-40-70(63%).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Hamamelis p. 150. 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 November 16, 2026 for a May 3 last frost. Too late for spring 2027 — that needed starting on November 15, 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

Steps after step 4 run on after germination.

about 15 months from start to sowing. Then 56 days to germinate.

37% germination in 0–56 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Hamamelis p. 150Public domain
Show the original text
Hamamelis (Hamamelidaceae). H. virginiana has a pattern of the seeds splitting during a cycle at 40 followed by a burst of germination in 14 d on shifting to 70. This pattern extends through many alternating cycles for both fresh and DS-seed. Fresh seed germ. 70-40(14%)-70(23%)-40-70(22%), 40(1%)-70(16%)-40(7%)- 70(15%)-40-70(16%), and 14% in April in outdoor treatment. Seed DS 6 m at 70 germ .70-40-70(37% in 0-8 w)-40-70(l 1 %) and 40-70(18%)-40-70(63%).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Hamamelis p. 150. 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 June 19, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 18, 2026.

  1. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    14 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

    22 germinated in this phase.

Steps after step 3 run on after germination.

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

23% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Hamamelis p. 150Public domain
Show the original text
Hamamelis (Hamamelidaceae). H. virginiana has a pattern of the seeds splitting during a cycle at 40 followed by a burst of germination in 14 d on shifting to 70. This pattern extends through many alternating cycles for both fresh and DS-seed. Fresh seed germ. 70-40(14%)-70(23%)-40-70(22%), 40(1%)-70(16%)-40(7%)- 70(15%)-40-70(16%), and 14% in April in outdoor treatment. Seed DS 6 m at 70 germ .70-40-70(37% in 0-8 w)-40-70(l 1 %) and 40-70(18%)-40-70(63%).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Hamamelis p. 150. 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 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

    1 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

    7 germinated in this phase.

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    15 germinated in this phase.

  5. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  6. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    16 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.

16% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Hamamelis p. 150Public domain
Show the original text
Hamamelis (Hamamelidaceae). H. virginiana has a pattern of the seeds splitting during a cycle at 40 followed by a burst of germination in 14 d on shifting to 70. This pattern extends through many alternating cycles for both fresh and DS-seed. Fresh seed germ. 70-40(14%)-70(23%)-40-70(22%), 40(1%)-70(16%)-40(7%)- 70(15%)-40-70(16%), and 14% in April in outdoor treatment. Seed DS 6 m at 70 germ .70-40-70(37% in 0-8 w)-40-70(l 1 %) and 40-70(18%)-40-70(63%).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Hamamelis p. 150. 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.

  1. Sow outdoors and leave it

    Up in April.

No stated waiting before sowing.

14% germination.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Hamamelis p. 150Public domain
Show the original text
Hamamelis (Hamamelidaceae). H. virginiana has a pattern of the seeds splitting during a cycle at 40 followed by a burst of germination in 14 d on shifting to 70. This pattern extends through many alternating cycles for both fresh and DS-seed. Fresh seed germ. 70-40(14%)-70(23%)-40-70(22%), 40(1%)-70(16%)-40(7%)- 70(15%)-40-70(16%), and 14% in April in outdoor treatment. Seed DS 6 m at 70 germ .70-40-70(37% in 0-8 w)-40-70(l 1 %) and 40-70(18%)-40-70(63%).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Hamamelis p. 150. 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.