Deno’s Garden

Astrantia carniolica

Genus Astrantia

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. 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 56 days to germinate.

100% germination in 42–56 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. carniolica rubra germ. 70D-40(100% in 6-8 w) and 40-70D(4/8 in 2nd w)- 40(4/8 in 10th w): Light had no effect.
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 High Rated by us, not by the source.

Start around September 23, 2026 for a May 3 last frost.

  1. Cold moist stratification

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

  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

    4/8 germinated in this phase.

Steps after step 2 run on after germination.

about 6 months from start to sowing. Then 14 days to germinate.

50% germination in 14 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. carniolica rubra germ. 70D-40(100% in 6-8 w) and 40-70D(4/8 in 2nd w)- 40(4/8 in 10th w): Light had no effect.
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.