Deno’s GardenMy Garden

Potentilla recta

Erect Cinquefoil · Erect Potentil · Roughfruit Cinquefoil · Sulfur Cinquefoil

Family RosaceaeGenus Potentilla

Pale yellow five-petalled flowers with notched tips, on hairy branching stems above leaves cut into narrow fingers, over paving.
FlowerJerzy OpiołaCC BY-SA 4.0

About the plant

What it is and where it grows — not part of any germination protocol.

The plant

Habit
Herbaceous Perennial, WildflowerExtension Gardener Plant Toolbox
Habit
perennialPlants of the World Online
Flower
Gold/YellowExtension Gardener Plant Toolbox
Blooms
Spring, SummerExtension Gardener Plant Toolbox
Native range
Albania, Algeria, Altay, Austria, Belarus, Bulgaria and elsewhereGBIF Backbone Taxonomy
Hardiness zones
3-8Extension Gardener Plant Toolbox

Growing conditions

Sun
Full sun; Partial ShadeExtension Gardener Plant Toolbox
Soil
Clay, Loam (Silt), SandExtension Gardener Plant Toolbox
Soil pH
Alkaline (>8.0)Extension Gardener Plant Toolbox
Moisture
Good Drainage, Occasionally DryExtension Gardener Plant Toolbox

Toxicity is noted only where a source states it. No note here is not a finding of safety.

Sources: Extension Gardener Plant Toolbox — NC State Extension; Plants of the World Online — Royal Botanic Gardens, Kew; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Worth knowing

  • Sulfur cinquefoil probably came from the Mediterranean Basin. Introduced to North America, it was first collected in Ontario in the 19th century and in British Columbia in 1914, and now ranges across almost the whole continent. In some places it is a minor noxious weed. Wikipedia: Potentilla recta

Three sources report 18 treatments between them. All are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty Moderate Rated by us, not by the source.

Start around March 9, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 9, 2023.

  1. Dry storage

    Duration: 1460 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: light

about 4 years from start to sowing. Then 28 days to germinate.

47% germination in 7–28 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Potentilla p. 56Public domain
Show the original text
Potentilla (Rosaceae). , P. recta had a complex behavior with fresh seeds germinating only in 70 GA-3. As DS progressed the seeds began germinating in 70L and then gradually in 70D as DS progressed to 3 y. Seeds DS 4 y germ. 70L(47% in ,1-4 w) and 70D(30% in 1-6 w) showing that these trends continued as well as the gradual dying.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Potentilla p. 56. 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, 1998

Difficulty Moderate Rated by us, not by the source.

Start around February 23, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on February 23, 2023.

  1. Dry storage

    Duration: 1460 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

about 4 years from start to sowing. Then 42 days to germinate.

30% germination in 7–42 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Potentilla p. 56Public domain
Show the original text
Potentilla (Rosaceae). , P. recta had a complex behavior with fresh seeds germinating only in 70 GA-3. As DS progressed the seeds began germinating in 70L and then gradually in 70D as DS progressed to 3 y. Seeds DS 4 y germ. 70L(47% in ,1-4 w) and 70D(30% in 1-6 w) showing that these trends continued as well as the gradual dying.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Potentilla p. 56. 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, 1996

Difficulty Low Rated by us, not by the source.

Start around March 30, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 29, 2025.

  1. Dry storage

    Duration: 730 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: light

about 2 years from start to sowing. Then 7 days to germinate.

100% germination in 5–7 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Potentilla p. 68Public domain
Show the original text
Potentilla (Rosaceae). P. recta has a complex behavior. Fresh seeds germ. 70 GA-3(64% in 3-10 w) and none in 70L or 70D. Seeds DS 6 m germ ' 70 GA-3(60% in 5-11 d), 70L(61% in 5-10 d), and 70D(5% in 5-10 d). Seeds DS 1 y germ. 70L(90% in 4-6 d) and 70D(17% iri 2nd w). Seeds DS 2 y germ. 70L(100% in 5- 7 d). Seeds DS 3 y germ. 70L(50% in 4-6 d) and 70D(38% in 4-8 d). What is happening is that GA-3-seems to eiiminate immediately the system blocking germination and fresh seed germ. in 70 GA-3. The system blocking germination in 70L is being removed by DS and more rapidly than the system blocking germination in 70D. Superimposed on this is a rate of dying which becomes significant by the 3rd y of
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Potentilla p. 68. 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, 1996

Difficulty Low 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: 365 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: light

about 12 months from start to sowing. Then 6 days to germinate.

90% germination in 4–6 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Potentilla p. 68Public domain
Show the original text
Potentilla (Rosaceae). P. recta has a complex behavior. Fresh seeds germ. 70 GA-3(64% in 3-10 w) and none in 70L or 70D. Seeds DS 6 m germ ' 70 GA-3(60% in 5-11 d), 70L(61% in 5-10 d), and 70D(5% in 5-10 d). Seeds DS 1 y germ. 70L(90% in 4-6 d) and 70D(17% iri 2nd w). Seeds DS 2 y germ. 70L(100% in 5- 7 d). Seeds DS 3 y germ. 70L(50% in 4-6 d) and 70D(38% in 4-8 d). What is happening is that GA-3-seems to eiiminate immediately the system blocking germination and fresh seed germ. in 70 GA-3. The system blocking germination in 70L is being removed by DS and more rapidly than the system blocking germination in 70D. Superimposed on this is a rate of dying which becomes significant by the 3rd y of
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Potentilla p. 68. 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, 1996

Difficulty Moderate Rated by us, not by the source.

Start around January 25, 2027 for a May 3 last frost.

  1. Gibberellic acid soak

  2. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 70 days to germinate.

64% germination in 21–70 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Potentilla p. 68Public domain
Show the original text
Potentilla (Rosaceae). P. recta has a complex behavior. Fresh seeds germ. 70 GA-3(64% in 3-10 w) and none in 70L or 70D. Seeds DS 6 m germ ' 70 GA-3(60% in 5-11 d), 70L(61% in 5-10 d), and 70D(5% in 5-10 d). Seeds DS 1 y germ. 70L(90% in 4-6 d) and 70D(17% iri 2nd w). Seeds DS 2 y germ. 70L(100% in 5- 7 d). Seeds DS 3 y germ. 70L(50% in 4-6 d) and 70D(38% in 4-8 d). What is happening is that GA-3-seems to eiiminate immediately the system blocking germination and fresh seed germ. in 70 GA-3. The system blocking germination in 70L is being removed by DS and more rapidly than the system blocking germination in 70D. Superimposed on this is a rate of dying which becomes significant by the 3rd y of
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Potentilla p. 68. 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 6

DerivedN. C. Deno, 1996

Difficulty Moderate Rated by us, not by the source.

Start around September 28, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 27, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: light

about 6 months from start to sowing. Then 10 days to germinate.

61% germination in 5–10 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Potentilla p. 68Public domain
Show the original text
Potentilla (Rosaceae). P. recta has a complex behavior. Fresh seeds germ. 70 GA-3(64% in 3-10 w) and none in 70L or 70D. Seeds DS 6 m germ ' 70 GA-3(60% in 5-11 d), 70L(61% in 5-10 d), and 70D(5% in 5-10 d). Seeds DS 1 y germ. 70L(90% in 4-6 d) and 70D(17% iri 2nd w). Seeds DS 2 y germ. 70L(100% in 5- 7 d). Seeds DS 3 y germ. 70L(50% in 4-6 d) and 70D(38% in 4-8 d). What is happening is that GA-3-seems to eiiminate immediately the system blocking germination and fresh seed germ. in 70 GA-3. The system blocking germination in 70L is being removed by DS and more rapidly than the system blocking germination in 70D. Superimposed on this is a rate of dying which becomes significant by the 3rd y of
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Potentilla p. 68. 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 7

DerivedN. C. Deno, 1996

Difficulty Moderate Rated by us, not by the source.

Start around September 27, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 26, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Gibberellic acid soak

  3. Sow and cover

    Temperature: 70°F 21°C

about 6 months from start to sowing. Then 11 days to germinate.

60% germination in 5–11 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Potentilla p. 68Public domain
Show the original text
Potentilla (Rosaceae). P. recta has a complex behavior. Fresh seeds germ. 70 GA-3(64% in 3-10 w) and none in 70L or 70D. Seeds DS 6 m germ ' 70 GA-3(60% in 5-11 d), 70L(61% in 5-10 d), and 70D(5% in 5-10 d). Seeds DS 1 y germ. 70L(90% in 4-6 d) and 70D(17% iri 2nd w). Seeds DS 2 y germ. 70L(100% in 5- 7 d). Seeds DS 3 y germ. 70L(50% in 4-6 d) and 70D(38% in 4-8 d). What is happening is that GA-3-seems to eiiminate immediately the system blocking germination and fresh seed germ. in 70 GA-3. The system blocking germination in 70L is being removed by DS and more rapidly than the system blocking germination in 70D. Superimposed on this is a rate of dying which becomes significant by the 3rd y of
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Potentilla p. 68. 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 8

DerivedN. C. Deno, 1996

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, 2024.

  1. Dry storage

    Duration: 1095 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: light

about 3 years from start to sowing. Then 6 days to germinate.

50% germination in 4–6 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Potentilla p. 68Public domain
Show the original text
Potentilla (Rosaceae). P. recta has a complex behavior. Fresh seeds germ. 70 GA-3(64% in 3-10 w) and none in 70L or 70D. Seeds DS 6 m germ ' 70 GA-3(60% in 5-11 d), 70L(61% in 5-10 d), and 70D(5% in 5-10 d). Seeds DS 1 y germ. 70L(90% in 4-6 d) and 70D(17% iri 2nd w). Seeds DS 2 y germ. 70L(100% in 5- 7 d). Seeds DS 3 y germ. 70L(50% in 4-6 d) and 70D(38% in 4-8 d). What is happening is that GA-3-seems to eiiminate immediately the system blocking germination and fresh seed germ. in 70 GA-3. The system blocking germination in 70L is being removed by DS and more rapidly than the system blocking germination in 70D. Superimposed on this is a rate of dying which becomes significant by the 3rd y of
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Potentilla p. 68. 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 9

DerivedN. C. Deno, 1996

Difficulty Moderate Rated by us, not by the source.

Start around March 29, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 28, 2024.

  1. Dry storage

    Duration: 1095 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

about 3 years from start to sowing. Then 8 days to germinate.

38% germination in 4–8 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Potentilla p. 68Public domain
Show the original text
Potentilla (Rosaceae). P. recta has a complex behavior. Fresh seeds germ. 70 GA-3(64% in 3-10 w) and none in 70L or 70D. Seeds DS 6 m germ ' 70 GA-3(60% in 5-11 d), 70L(61% in 5-10 d), and 70D(5% in 5-10 d). Seeds DS 1 y germ. 70L(90% in 4-6 d) and 70D(17% iri 2nd w). Seeds DS 2 y germ. 70L(100% in 5- 7 d). Seeds DS 3 y germ. 70L(50% in 4-6 d) and 70D(38% in 4-8 d). What is happening is that GA-3-seems to eiiminate immediately the system blocking germination and fresh seed germ. in 70 GA-3. The system blocking germination in 70L is being removed by DS and more rapidly than the system blocking germination in 70D. Superimposed on this is a rate of dying which becomes significant by the 3rd y of
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Potentilla p. 68. 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 10

DerivedN. C. Deno, 1996

Difficulty High Rated by us, not by the source.

Start around March 23, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 22, 2026.

  1. Dry storage

    Duration: 365 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

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

17% germination in 14 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Potentilla p. 68Public domain
Show the original text
Potentilla (Rosaceae). P. recta has a complex behavior. Fresh seeds germ. 70 GA-3(64% in 3-10 w) and none in 70L or 70D. Seeds DS 6 m germ ' 70 GA-3(60% in 5-11 d), 70L(61% in 5-10 d), and 70D(5% in 5-10 d). Seeds DS 1 y germ. 70L(90% in 4-6 d) and 70D(17% iri 2nd w). Seeds DS 2 y germ. 70L(100% in 5- 7 d). Seeds DS 3 y germ. 70L(50% in 4-6 d) and 70D(38% in 4-8 d). What is happening is that GA-3-seems to eiiminate immediately the system blocking germination and fresh seed germ. in 70 GA-3. The system blocking germination in 70L is being removed by DS and more rapidly than the system blocking germination in 70D. Superimposed on this is a rate of dying which becomes significant by the 3rd y of
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Potentilla p. 68. 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 11

DerivedN. C. Deno, 1996

Difficulty Very high Rated by us, not by the source.

Start around September 28, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 27, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

about 6 months from start to sowing. Then 10 days to germinate.

5% germination in 5–10 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Potentilla p. 68Public domain
Show the original text
Potentilla (Rosaceae). P. recta has a complex behavior. Fresh seeds germ. 70 GA-3(64% in 3-10 w) and none in 70L or 70D. Seeds DS 6 m germ ' 70 GA-3(60% in 5-11 d), 70L(61% in 5-10 d), and 70D(5% in 5-10 d). Seeds DS 1 y germ. 70L(90% in 4-6 d) and 70D(17% iri 2nd w). Seeds DS 2 y germ. 70L(100% in 5- 7 d). Seeds DS 3 y germ. 70L(50% in 4-6 d) and 70D(38% in 4-8 d). What is happening is that GA-3-seems to eiiminate immediately the system blocking germination and fresh seed germ. in 70 GA-3. The system blocking germination in 70L is being removed by DS and more rapidly than the system blocking germination in 70D. Superimposed on this is a rate of dying which becomes significant by the 3rd y of
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Potentilla p. 68. 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 12

DerivedN. C. Deno, 1996

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing.

0% germination.

Nothing germinated at 70.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Potentilla p. 68Public domain
Show the original text
Potentilla (Rosaceae). P. recta has a complex behavior. Fresh seeds germ. 70 GA-3(64% in 3-10 w) and none in 70L or 70D. Seeds DS 6 m germ ' 70 GA-3(60% in 5-11 d), 70L(61% in 5-10 d), and 70D(5% in 5-10 d). Seeds DS 1 y germ. 70L(90% in 4-6 d) and 70D(17% iri 2nd w). Seeds DS 2 y germ. 70L(100% in 5- 7 d). Seeds DS 3 y germ. 70L(50% in 4-6 d) and 70D(38% in 4-8 d). What is happening is that GA-3-seems to eiiminate immediately the system blocking germination and fresh seed germ. in 70 GA-3. The system blocking germination in 70L is being removed by DS and more rapidly than the system blocking germination in 70D. Superimposed on this is a rate of dying which becomes significant by the 3rd y of
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Potentilla p. 68. Quoted exactly. Every value on this card comes from this record; the step names come from a fixed list.

Protocol 13

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around September 24, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 23, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: light

about 6 months from start to sowing. Then 14 days to germinate.

60% germination in 14 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Potentilla p. 196Public domain
Show the original text
Potentilla (Rosaceae). P. recta germ. 70D GA-3(60% in 3-11 w), none in 70D or 70L, 40-70L(5%), and 40-70D(none) using fresh seeds. Seeds DS 6 m at 70 germ. 70L(60% in 2nd w), 70D GA-3(60% in 2nd w), and 70D(5% in 2nd w). The DS for 6 m at 70 converted the seeds from requiring GA-3 to requiring either GA-3 or light.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Potentilla p. 196. 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 14

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around January 18, 2027 for a May 3 last frost.

  1. Gibberellic acid soak

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 77 days to germinate.

60% germination in 21–77 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Potentilla p. 196Public domain
Show the original text
Potentilla (Rosaceae). P. recta germ. 70D GA-3(60% in 3-11 w), none in 70D or 70L, 40-70L(5%), and 40-70D(none) using fresh seeds. Seeds DS 6 m at 70 germ. 70L(60% in 2nd w), 70D GA-3(60% in 2nd w), and 70D(5% in 2nd w). The DS for 6 m at 70 converted the seeds from requiring GA-3 to requiring either GA-3 or light.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Potentilla p. 196. 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 15

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around September 24, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 23, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Gibberellic acid soak

  3. Sow and cover

    Temperature: 70°F 21°C Light: dark

about 6 months from start to sowing. Then 14 days to germinate.

60% germination in 14 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Potentilla p. 196Public domain
Show the original text
Potentilla (Rosaceae). P. recta germ. 70D GA-3(60% in 3-11 w), none in 70D or 70L, 40-70L(5%), and 40-70D(none) using fresh seeds. Seeds DS 6 m at 70 germ. 70L(60% in 2nd w), 70D GA-3(60% in 2nd w), and 70D(5% in 2nd w). The DS for 6 m at 70 converted the seeds from requiring GA-3 to requiring either GA-3 or light.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Potentilla p. 196. 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 16

DerivedN. C. Deno, 1993

Difficulty Very high Rated by us, not by the source.

Start around September 24, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 23, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

about 6 months from start to sowing. Then 14 days to germinate.

5% germination in 14 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Potentilla p. 196Public domain
Show the original text
Potentilla (Rosaceae). P. recta germ. 70D GA-3(60% in 3-11 w), none in 70D or 70L, 40-70L(5%), and 40-70D(none) using fresh seeds. Seeds DS 6 m at 70 germ. 70L(60% in 2nd w), 70D GA-3(60% in 2nd w), and 70D(5% in 2nd w). The DS for 6 m at 70 converted the seeds from requiring GA-3 to requiring either GA-3 or light.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Potentilla p. 196. 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 17

DerivedN. C. Deno, 1993

Difficulty Very 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 Light: light

about 3 months from start to step 2. Germination happens during step 2; time not stated, 21 days assumed.

5% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Potentilla p. 196Public domain
Show the original text
Potentilla (Rosaceae). P. recta germ. 70D GA-3(60% in 3-11 w), none in 70D or 70L, 40-70L(5%), and 40-70D(none) using fresh seeds. Seeds DS 6 m at 70 germ. 70L(60% in 2nd w), 70D GA-3(60% in 2nd w), and 70D(5% in 2nd w). The DS for 6 m at 70 converted the seeds from requiring GA-3 to requiring either GA-3 or light.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Potentilla p. 196. 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 18

DerivedN. C. Deno, 1993

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing.

0% germination.

Nothing germinated at 70.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Potentilla p. 196Public domain
Show the original text
Potentilla (Rosaceae). P. recta germ. 70D GA-3(60% in 3-11 w), none in 70D or 70L, 40-70L(5%), and 40-70D(none) using fresh seeds. Seeds DS 6 m at 70 germ. 70L(60% in 2nd w), 70D GA-3(60% in 2nd w), and 70D(5% in 2nd w). The DS for 6 m at 70 converted the seeds from requiring GA-3 to requiring either GA-3 or light.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Potentilla p. 196. Quoted exactly. Every value on this card comes from this record; the step names come from a fixed list.

How each step is done, in Deno’s words, and what Verified and Derived mean.

Germination trials

Readers’ own records of sowing this species, published after review. Share your trial · All trials

Add to My Garden

View species page