Deno’s Garden

Viburnum dentatum

Genus Viburnum

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around January 17, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on January 16, 2026.

  1. Clean the flesh off the seed

  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

    1 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

    3 germinated in this phase.

Steps after step 5 run on after germination.

about 12 months from start to sowing. Then 84 days to germinate.

48% germination in 21–84 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Viburnum p. 228Public domain
Show the original text
Viburnum (Caprlfollaceae). Viburnums divide into two groups. The first group germ. in a 40-70 pattern. The cotyledons develop within a week or two after germination. This group is adapted to germination in spring and immediate leaf development and growth. The second group germ. in a 40-70-40 pattern with extension into a 40-70-40-70-40 pattern. Germination takes place in a cycle at 40. The seedlings must be kept at 40 for two to three months after radicle development is complete in order for the cotyledons to develop properly on shifting to 70. Puncturing. the seed coat had no effect in three species. All seed was WC for 1-2 w. Germination was stimulated by GA-3 in V. dentatum germ. 70-40-70(1%)-40(48% in 3-12 w)-70(3%), less in 40(12%)- 70(3%)-40(9%), and none (all rotted) in outdoor treatment. Seed DS 6 m at 40 germ. 40(3/8 in 2-7 w) and all rotted when started at 70. The seedlings were kept at 40 for 2 m after radicle development was complete after which the cotyledons developed normally on shifting to 70. Seed DS 6 m at 70 was dead.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Viburnum p. 228. 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 August 20, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on August 19, 2026.

  1. Clean the flesh off the seed

  2. Dry storage

    Duration: 180 daysTemperature: 40°F 4°C

  3. Cold moist stratification

    Temperature: 40°F 4°C

about 6 months from start to sowing. Then 49 days to germinate.

38% germination in 14–49 days.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Viburnum p. 228Public domain
Show the original text
Viburnum (Caprlfollaceae). Viburnums divide into two groups. The first group germ. in a 40-70 pattern. The cotyledons develop within a week or two after germination. This group is adapted to germination in spring and immediate leaf development and growth. The second group germ. in a 40-70-40 pattern with extension into a 40-70-40-70-40 pattern. Germination takes place in a cycle at 40. The seedlings must be kept at 40 for two to three months after radicle development is complete in order for the cotyledons to develop properly on shifting to 70. Puncturing. the seed coat had no effect in three species. All seed was WC for 1-2 w. Germination was stimulated by GA-3 in V. dentatum germ. 70-40-70(1%)-40(48% in 3-12 w)-70(3%), less in 40(12%)- 70(3%)-40(9%), and none (all rotted) in outdoor treatment. Seed DS 6 m at 40 germ. 40(3/8 in 2-7 w) and all rotted when started at 70. The seedlings were kept at 40 for 2 m after radicle development was complete after which the cotyledons developed normally on shifting to 70. Seed DS 6 m at 70 was dead.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Viburnum p. 228. 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. Clean the flesh off the seed

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    3 germinated in this phase.

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    9 germinated in this phase.

Steps after step 2 run on after germination.

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

12% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Viburnum p. 228Public domain
Show the original text
Viburnum (Caprlfollaceae). Viburnums divide into two groups. The first group germ. in a 40-70 pattern. The cotyledons develop within a week or two after germination. This group is adapted to germination in spring and immediate leaf development and growth. The second group germ. in a 40-70-40 pattern with extension into a 40-70-40-70-40 pattern. Germination takes place in a cycle at 40. The seedlings must be kept at 40 for two to three months after radicle development is complete in order for the cotyledons to develop properly on shifting to 70. Puncturing. the seed coat had no effect in three species. All seed was WC for 1-2 w. Germination was stimulated by GA-3 in V. dentatum germ. 70-40-70(1%)-40(48% in 3-12 w)-70(3%), less in 40(12%)- 70(3%)-40(9%), and none (all rotted) in outdoor treatment. Seed DS 6 m at 40 germ. 40(3/8 in 2-7 w) and all rotted when started at 70. The seedlings were kept at 40 for 2 m after radicle development was complete after which the cotyledons developed normally on shifting to 70. Seed DS 6 m at 70 was dead.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Viburnum p. 228. 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.