Deno’s Garden

Saponaria caespitosa

Genus Saponaria

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 July 16, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on July 15, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Temperature: 40°F 4°C

about 6 months from start to sowing. Then 84 days to germinate.

87% germination in 63–84 days.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Saponaria p. 210Public domain
Show the original text
Saponaria (Caryophyllaceae). . S. caespitosa germ. best with seed DS 6 m at 70 or 40 in 40(87% in 9-12 w). Germination was low and extended in all other treatments as shown by 70(1%)-40(1%)-70 for DS seed and 70-40(14%)-70(19%)- 40(1%) and 40(4%)-70(2%)-40(9%)-70(1%) for fresh seed.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Saponaria p. 210. 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 June 19, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 18, 2026.

  1. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    14 germinated in this phase.

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    1 germinated in this phase.

Steps after step 3 run on after germination.

about 9 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, Saponaria p. 210Public domain
Show the original text
Saponaria (Caryophyllaceae). . S. caespitosa germ. best with seed DS 6 m at 70 or 40 in 40(87% in 9-12 w). Germination was low and extended in all other treatments as shown by 70(1%)-40(1%)-70 for DS seed and 70-40(14%)-70(19%)- 40(1%) and 40(4%)-70(2%)-40(9%)-70(1%) for fresh seed.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Saponaria p. 210. 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 Very high Rated by us, not by the source.

Start around June 19, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 18, 2026.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    4 germinated in this phase.

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    2 germinated in this phase.

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    1 germinated in this phase.

Steps after step 3 run on after germination.

about 9 months from start to sowing. Germination time not stated; 21 days assumed.

9% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Saponaria p. 210Public domain
Show the original text
Saponaria (Caryophyllaceae). . S. caespitosa germ. best with seed DS 6 m at 70 or 40 in 40(87% in 9-12 w). Germination was low and extended in all other treatments as shown by 70(1%)-40(1%)-70 for DS seed and 70-40(14%)-70(19%)- 40(1%) and 40(4%)-70(2%)-40(9%)-70(1%) for fresh seed.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Saponaria p. 210. 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 Very high Rated by us, not by the source.

Start around June 19, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 18, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    1 germinated in this phase.

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

Steps after step 2 run on after germination.

about 9 months from start to sowing. Germination time not stated; 21 days assumed.

1% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Saponaria p. 210Public domain
Show the original text
Saponaria (Caryophyllaceae). . S. caespitosa germ. best with seed DS 6 m at 70 or 40 in 40(87% in 9-12 w). Germination was low and extended in all other treatments as shown by 70(1%)-40(1%)-70 for DS seed and 70-40(14%)-70(19%)- 40(1%) and 40(4%)-70(2%)-40(9%)-70(1%) for fresh seed.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Saponaria p. 210. 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.