Deno’s Garden

Geranium sylvaticum

Genus Geranium

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty High Rated by us, not by the source.

Start around July 5, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on July 4, 2026.

  1. Warm moist stratification

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

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

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

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  5. Warm moist stratification

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

    1/10 germinated in this phase.

Steps after step 3 run on after germination.

about 9 months from start to sowing. Then 5 days to germinate.

40% germination in 3–5 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Geranium p. 46Public domain
Show the original text
Geranium (Geraniaceae). G. sylvaticum germ. 70D-40-70D(l/l0 on 4th d)- 40-70D(1/10 on 6th d), 70L-40-70D(4/10 in 3-5 d)-40-70D(1/10 on 5th d), and 40-70D- 40-70D{1/9 on 5th d)-40{1/9).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Geranium p. 46. 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, 1996

Difficulty High Rated by us, not by the source.

Start around January 5, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on January 4, 2026.

  1. Warm moist stratification

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

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

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

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  5. Warm moist stratification

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

about 15 months from start to sowing. Then 6 days to germinate.

10% germination in 6 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Geranium p. 46Public domain
Show the original text
Geranium (Geraniaceae). G. sylvaticum germ. 70D-40-70D(l/l0 on 4th d)- 40-70D(1/10 on 6th d), 70L-40-70D(4/10 in 3-5 d)-40-70D(1/10 on 5th d), and 40-70D- 40-70D{1/9 on 5th d)-40{1/9).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Geranium p. 46. 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.