Deno’s Garden

Astrantia major

Genus Astrantia

Two sources report three treatments between them. All are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty Moderate Rated by us, not by the source.

Start around October 3, 2026 for a May 3 last frost.

  1. Cold moist stratification

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

    10 germinated in this phase.

  2. Warm moist stratification

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

about 6 months from start to sowing. Then 4 days to germinate.

55% germination in 1–4 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Astrantia p. 16Public domain
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Astrantia (Apiaceae). Larger samples of A. major germ. 70D-40(85% in 8-10 w) and 40(10%)-70D(55% in 1 -4 d). Light had no significant effect. Samples of A. major and A. major rubra DS 3 y were dead.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Astrantia p. 16. 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 Moderate Rated by us, not by the source.

Start around July 30, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on July 29, 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 Light: either

about 6 months from start to sowing. Then 70 days to germinate.

85% germination in 56–70 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Astrantia p. 16Public domain
Show the original text
Astrantia (Apiaceae). Larger samples of A. major germ. 70D-40(85% in 8-10 w) and 40(10%)-70D(55% in 1 -4 d). Light had no significant effect. Samples of A. major and A. major rubra DS 3 y were dead.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Astrantia p. 16. 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 3

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around October 13, 2026 for a May 3 last frost.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 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

    1/7 germinated in this phase.

Steps after step 1 run on after germination.

about 3 months from start to sowing. Then 84 days to germinate.

14% germination in 84 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Astrantia p. 105Public domain
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Astrantia (Apiaceae). A. major germ. 40(1/7 in 12th w)-70-40-70(1/7).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Astrantia p. 105. 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.