Deno’s Garden

Ribes americanum

Genus Ribes

This source reports three treatments. All are shown.

Protocol 1

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. Clean the flesh off the seed

  2. Leach in running water

    Duration: 7 days

    Washed and cleaned daily for 7 days.

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: light

  5. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  6. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: light

about 12 months from start to sowing. Then 14 days to germinate.

10% germination in 14 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Ribes p. 206Public domain
Show the original text
Ribes. (Saxifragaceae). All seed was WC for 7 d. R. americana is native on the property and germ. best if WC and placed outdoors in September. These germ. 35% in April. This sample also germ. 70 GA- 3(6% in 2nd w) and 70D(none). Other samples germ. 40-70L(9% in 2-9 w) and 40- 70L-40-70L(10% in 2nd w). The seeds are difficult to clean as a membrane adheres tightly and the seeds float. •
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Ribes p. 206. 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 Very high Rated by us, not by the source.

Start around July 30, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on July 29, 2026.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 7 days

    Washed and cleaned daily for 7 days.

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: light

about 6 months from start to sowing. Then 63 days to germinate.

9% germination in 14–63 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Ribes p. 206Public domain
Show the original text
Ribes. (Saxifragaceae). All seed was WC for 7 d. R. americana is native on the property and germ. best if WC and placed outdoors in September. These germ. 35% in April. This sample also germ. 70 GA- 3(6% in 2nd w) and 70D(none). Other samples germ. 40-70L(9% in 2-9 w) and 40- 70L-40-70L(10% in 2nd w). The seeds are difficult to clean as a membrane adheres tightly and the seeds float. •
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Ribes p. 206. 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 March 15, 2027 for a May 3 last frost.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 7 days

    Washed and cleaned daily for 7 days.

  3. Gibberellic acid soak

  4. Sow and cover

    Temperature: 70°F 21°C

7 days from start to sowing. Then 14 days to germinate.

6% germination in 14 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Ribes p. 206Public domain
Show the original text
Ribes. (Saxifragaceae). All seed was WC for 7 d. R. americana is native on the property and germ. best if WC and placed outdoors in September. These germ. 35% in April. This sample also germ. 70 GA- 3(6% in 2nd w) and 70D(none). Other samples germ. 40-70L(9% in 2-9 w) and 40- 70L-40-70L(10% in 2nd w). The seeds are difficult to clean as a membrane adheres tightly and the seeds float. •
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Ribes p. 206. 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.