Deno’s Garden

Geranium maculatum

Genus Geranium

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around July 1, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 30, 2026.

  1. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    2 germinated in this phase.

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

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

39% germination in 2–9 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Geranium p. 148Public domain
Show the original text
Geranium (Geranlaceae). G. maculatum germ. best (77%) in February through April from fresh seed sown the previous July and given outdoor treatment. Fresh seed also germ. .70-40(2%)- 70(39% in 2-9 d) and none in 40-70-40. Seed. DS 6 m-at 40 or 70 is largely dead.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Geranium p. 148. 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

  1. Cold moist stratification

    Temperature: 40°F 4°C

No stated waiting before sowing.

0% germination.

Nothing germinated at 40.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Geranium p. 148Public domain
Show the original text
Geranium (Geranlaceae). G. maculatum germ. best (77%) in February through April from fresh seed sown the previous July and given outdoor treatment. Fresh seed also germ. .70-40(2%)- 70(39% in 2-9 d) and none in 40-70-40. Seed. DS 6 m-at 40 or 70 is largely dead.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Geranium p. 148. Quoted exactly. Every value on this card comes from this record; the step names come from a fixed list.