Deno’s Garden

Viburnum dilatatum

Genus Viburnum

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around December 26, 2026 for a May 3 last frost. Too late for spring 2027 — that needed starting on December 25, 2024.

  1. Clean the flesh off the seed

  2. Dry storage

    Duration: 180 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

  9. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 2 years from start to sowing. Then 21 days to germinate.

80% germination in 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. dilatatum seed collected in early December and DS 6m at 70 in the WC state germ. 70-40-70-40-70(71% in 10-14 w) and 40-70-40(5%)-70-40-70-40(80% in 3rd w). After radicle development was complete (3 m), the seedlings were shifted to 40 and samples periodically shifted to 70. Only after 4 m at 40 did the cotyledons develop.
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 April 8, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on April 7, 2025.

  1. Clean the flesh off the seed

  2. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  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

about 1.5 years from start to sowing. Then 98 days to germinate.

71% germination in 70–98 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. dilatatum seed collected in early December and DS 6m at 70 in the WC state germ. 70-40-70-40-70(71% in 10-14 w) and 40-70-40(5%)-70-40-70-40(80% in 3rd w). After radicle development was complete (3 m), the seedlings were shifted to 40 and samples periodically shifted to 70. Only after 4 m at 40 did the cotyledons develop.
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.