Deno’s Garden

Cornus florida

Genus Cornus

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty Moderate Rated by us, not by the source.

Start around August 13, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on August 12, 2026.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: dark

about 6 months from start to sowing. Then 56 days to germinate.

52% germination in 14–56 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Cornus p. 26Public domain
Show the original text
Cornus (Cornaceae). C. florida has been reinvestigated and germ. 70D(2%)-40-70D(18% on 4th d) and 40-70D(52% in 2-8 w) which is similar to that found before (2nd Ed.). The same seeds DS 1 y failed to germinate and were dead.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Cornus p. 26. 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, 1998

Difficulty High Rated by us, not by the source.

Start around July 6, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on July 5, 2026.

  1. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: dark

    2 germinated in this phase.

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: dark

about 9 months from start to sowing. Then 4 days to germinate.

18% germination in 4 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Cornus p. 26Public domain
Show the original text
Cornus (Cornaceae). C. florida has been reinvestigated and germ. 70D(2%)-40-70D(18% on 4th d) and 40-70D(52% in 2-8 w) which is similar to that found before (2nd Ed.). The same seeds DS 1 y failed to germinate and were dead.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Cornus p. 26. 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.