Deno’s Garden

Silene chalcedonica

Genus Silene

This source reports 4 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around March 28, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 8 days to germinate.

100% germination in 3–8 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Lychnis p. 174Public domain
Show the original text
Lychnis (Caryophyllaceae). L. chalcedonica germ. 70(100% in 3-8 d) and 40(10%)-70(90%) for fresh seed and 70(70%) and 40(25%)-70(75%) for seed DS 6 m at 70 or 40.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Lychnis p. 174. 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 Moderate Rated by us, not by the source.

Start around September 17, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 16, 2026.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    10 germinated in this phase.

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 6 months from start to sowing. Germination time not stated; 21 days assumed.

90% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Lychnis p. 174Public domain
Show the original text
Lychnis (Caryophyllaceae). L. chalcedonica germ. 70(100% in 3-8 d) and 40(10%)-70(90%) for fresh seed and 70(70%) and 40(25%)-70(75%) for seed DS 6 m at 70 or 40.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Lychnis p. 174. 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 Moderate Rated by us, not by the source.

Start around March 21, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 20, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    25 germinated in this phase.

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 12 months from start to sowing. Germination time not stated; 21 days assumed.

75% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Lychnis p. 174Public domain
Show the original text
Lychnis (Caryophyllaceae). L. chalcedonica germ. 70(100% in 3-8 d) and 40(10%)-70(90%) for fresh seed and 70(70%) and 40(25%)-70(75%) for seed DS 6 m at 70 or 40.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Lychnis p. 174. 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 4

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around September 17, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 16, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C

about 6 months from start to sowing. Germination time not stated; 21 days assumed.

70% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Lychnis p. 174Public domain
Show the original text
Lychnis (Caryophyllaceae). L. chalcedonica germ. 70(100% in 3-8 d) and 40(10%)-70(90%) for fresh seed and 70(70%) and 40(25%)-70(75%) for seed DS 6 m at 70 or 40.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Lychnis p. 174. 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.