Deno’s Garden

Viburnum sieboldii

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 March 21, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 20, 2026.

  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

    13 germinated in this phase.

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    6 germinated in this phase.

  5. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 12 months from start to sowing. Then 21 days to germinate.

38% germination in 2–21 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. sieboldi germ. 70-40-70(15% in 2d-1 1 w)-40(1%), 40-70(13%)-40(6%)- 70(38% in 2-21 d), and 14% in March and April in outdoor treatment. Only the radicle and root system develop at 70, and a.3 m at 40 and shift back to 70 are needed to develop the cotyledons. Seed DS 6 m at 70 or 40 largely rotted, but outdoor treatment of seed DS 6 m at 40 germ. 27% in March and April a year after being placed outdoors in April. It was not checked whether the seeds in outdoor treatment developed cotyledons in the same spring as germination.
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 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. 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

  5. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    1 germinated in this phase.

Steps after step 4 run on after germination.

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

15% germination in 2 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. sieboldi germ. 70-40-70(15% in 2d-1 1 w)-40(1%), 40-70(13%)-40(6%)- 70(38% in 2-21 d), and 14% in March and April in outdoor treatment. Only the radicle and root system develop at 70, and a.3 m at 40 and shift back to 70 are needed to develop the cotyledons. Seed DS 6 m at 70 or 40 largely rotted, but outdoor treatment of seed DS 6 m at 40 germ. 27% in March and April a year after being placed outdoors in April. It was not checked whether the seeds in outdoor treatment developed cotyledons in the same spring as germination.
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.

  1. Clean the flesh off the seed

  2. Sow outdoors and leave it

    Up in March and 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, 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. sieboldi germ. 70-40-70(15% in 2d-1 1 w)-40(1%), 40-70(13%)-40(6%)- 70(38% in 2-21 d), and 14% in March and April in outdoor treatment. Only the radicle and root system develop at 70, and a.3 m at 40 and shift back to 70 are needed to develop the cotyledons. Seed DS 6 m at 70 or 40 largely rotted, but outdoor treatment of seed DS 6 m at 40 germ. 27% in March and April a year after being placed outdoors in April. It was not checked whether the seeds in outdoor treatment developed cotyledons in the same spring as germination.
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.