Deno’s Garden

Fraxinus quadrangulata

Genus Fraxinus

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty High Rated by us, not by the source.

Start around May 2, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on May 2, 2023.

  1. Dry storage

    Duration: 540 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

  3. Warm moist stratification

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

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

  5. Warm moist stratification

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

  6. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

  7. Warm moist stratification

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

  8. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

  9. Warm moist stratification

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

  10. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

  11. Warm moist stratification

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

    3/6 germinated in this phase.

Steps after step 10 run on after germination.

about 3.5 years from start to sowing. Then 84 days to germinate.

50% germination in 84 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Fraxinus p. 34Public domain
Show the original text
Fraxinus (Oleaceae). Data on the three following species is now nearly complete. F. quadrangulata DS 18 m germ. 70D-40-70D-40-70D-40(23% in 4-12-w)- 70D(23% in 2 d-7 w)-40(17% in 12th w)-70D(47% in 1-3 d) and 40-70D-40-70D-40- 70D-40-70D-40(3/6 in 12th w)-70D(3/6 in 3rd d). Light had no significant effect and GA-3 led to total rotting. Seeds DS 4 y were dead. It would have been of interest to study fresh seeds..
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Fraxinus p. 34. 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 22, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on July 22, 2023.

  1. Dry storage

    Duration: 540 daysTemperature: 70°F 21°C

  2. Warm moist stratification

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

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

  4. Warm moist stratification

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

  5. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

  6. Warm moist stratification

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

  7. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

    23 germinated in this phase.

  8. Warm moist stratification

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

    23 germinated in this phase.

  9. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

    17 germinated in this phase.

  10. Warm moist stratification

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

about 3.5 years from start to sowing. Then 3 days to germinate.

47% germination in 1–3 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Fraxinus p. 34Public domain
Show the original text
Fraxinus (Oleaceae). Data on the three following species is now nearly complete. F. quadrangulata DS 18 m germ. 70D-40-70D-40-70D-40(23% in 4-12-w)- 70D(23% in 2 d-7 w)-40(17% in 12th w)-70D(47% in 1-3 d) and 40-70D-40-70D-40- 70D-40-70D-40(3/6 in 12th w)-70D(3/6 in 3rd d). Light had no significant effect and GA-3 led to total rotting. Seeds DS 4 y were dead. It would have been of interest to study fresh seeds..
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Fraxinus p. 34. 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.