Deno’s Garden

Phlox glaberrima

Genus Phlox

This source reports 5 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around March 31, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 30, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 12 months from start to sowing. Then 11 days to germinate.

71% germination in 3–11 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Phlox p. 191Public domain
Show the original text
Phlox (Polemonlaceae). Phlox seed is hard to collect as there are only a few seed in each spherical capsule and these capsules roll away as soon as ripe. As a result seed of Phlox is not readily available except for the annual P. glaberrima germ. 70(27% in 4-11 w)-40-70(20%)-40-70(13%) and 40- 70(1 1%)-40(9%)-70(16%)-40(2%). Seed DS 6 m at 70 germ. 70(50% in 5th w)-40- 70(8%) and seed DS 6 m at 40 germ. 70(57% in 2-9 w)-40(3%)-70(3%) and 40- 70(71% in 3-11 d).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Phlox p. 191. 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 May 8, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on May 7, 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

    3 germinated in this phase.

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    3 germinated in this phase.

Steps after step 2 run on after germination.

about 9 months from start to sowing. Then 63 days to germinate.

57% germination in 14–63 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Phlox p. 191Public domain
Show the original text
Phlox (Polemonlaceae). Phlox seed is hard to collect as there are only a few seed in each spherical capsule and these capsules roll away as soon as ripe. As a result seed of Phlox is not readily available except for the annual P. glaberrima germ. 70(27% in 4-11 w)-40-70(20%)-40-70(13%) and 40- 70(1 1%)-40(9%)-70(16%)-40(2%). Seed DS 6 m at 70 germ. 70(50% in 5th w)-40- 70(8%) and seed DS 6 m at 40 germ. 70(57% in 2-9 w)-40(3%)-70(3%) and 40- 70(71% in 3-11 d).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Phlox p. 191. 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 June 5, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 4, 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

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    8 germinated in this phase.

Steps after step 2 run on after germination.

about 9 months from start to sowing. Then 35 days to germinate.

50% germination in 35 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Phlox p. 191Public domain
Show the original text
Phlox (Polemonlaceae). Phlox seed is hard to collect as there are only a few seed in each spherical capsule and these capsules roll away as soon as ripe. As a result seed of Phlox is not readily available except for the annual P. glaberrima germ. 70(27% in 4-11 w)-40-70(20%)-40-70(13%) and 40- 70(1 1%)-40(9%)-70(16%)-40(2%). Seed DS 6 m at 70 germ. 70(50% in 5th w)-40- 70(8%) and seed DS 6 m at 40 germ. 70(57% in 2-9 w)-40(3%)-70(3%) and 40- 70(71% in 3-11 d).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Phlox p. 191. 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 High Rated by us, not by the source.

Start around October 20, 2026 for a May 3 last frost.

  1. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    20 germinated in this phase.

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  5. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    13 germinated in this phase.

Steps after step 1 run on after germination.

about 3 months from start to sowing. Then 77 days to germinate.

27% germination in 28–77 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Phlox p. 191Public domain
Show the original text
Phlox (Polemonlaceae). Phlox seed is hard to collect as there are only a few seed in each spherical capsule and these capsules roll away as soon as ripe. As a result seed of Phlox is not readily available except for the annual P. glaberrima germ. 70(27% in 4-11 w)-40-70(20%)-40-70(13%) and 40- 70(1 1%)-40(9%)-70(16%)-40(2%). Seed DS 6 m at 70 germ. 70(50% in 5th w)-40- 70(8%) and seed DS 6 m at 40 germ. 70(57% in 2-9 w)-40(3%)-70(3%) and 40- 70(71% in 3-11 d).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Phlox p. 191. 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 5

DerivedN. C. Deno, 1993

Difficulty High 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. 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

    9 germinated in this phase.

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  5. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    2 germinated in this phase.

Steps after step 4 run on after germination.

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

16% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Phlox p. 191Public domain
Show the original text
Phlox (Polemonlaceae). Phlox seed is hard to collect as there are only a few seed in each spherical capsule and these capsules roll away as soon as ripe. As a result seed of Phlox is not readily available except for the annual P. glaberrima germ. 70(27% in 4-11 w)-40-70(20%)-40-70(13%) and 40- 70(1 1%)-40(9%)-70(16%)-40(2%). Seed DS 6 m at 70 germ. 70(50% in 5th w)-40- 70(8%) and seed DS 6 m at 40 germ. 70(57% in 2-9 w)-40(3%)-70(3%) and 40- 70(71% in 3-11 d).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Phlox p. 191. 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.