Deno’s Garden

Lamprocapnos spectabilis

Genus Lamprocapnos

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

    1 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.

28% germination in 3–9 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Dicentra p. 132Public domain
Show the original text
Dicentra (Fumariaceae). DS is either fatal or severely deleterious. J. Forrest reported that D. spectabilis germ. best with fresh seed in 70-40(1%)-70(28% in 3-9d, mainly on 3rd d) and 40(19%)-70(5%)-40(11%)-70. DS 6 m at 70 or 40 is completely fatal. As with the two other species the seed splits first .and radicle and cotyledon development follow a few weeks later. Germination was dramatically stimulated by GA- 3 at 70, however the seedlings were weak and died.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Dicentra p. 132. 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

Difficulty High Rated by us, not by the source.

Start around December 15, 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

    5 germinated in this phase.

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    11 germinated in this phase.

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

Steps after step 1 run on after germination.

about 3 months from start to sowing. Germination time not stated; 21 days assumed.

19% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Dicentra p. 132Public domain
Show the original text
Dicentra (Fumariaceae). DS is either fatal or severely deleterious. J. Forrest reported that D. spectabilis germ. best with fresh seed in 70-40(1%)-70(28% in 3-9d, mainly on 3rd d) and 40(19%)-70(5%)-40(11%)-70. DS 6 m at 70 or 40 is completely fatal. As with the two other species the seed splits first .and radicle and cotyledon development follow a few weeks later. Germination was dramatically stimulated by GA- 3 at 70, however the seedlings were weak and died.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Dicentra p. 132. 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.