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Dipsacus sylvestris

Genus Dipsacus

Many spiny teasel heads on tall stems above coarse grey-green leaves at a woodland edge
The whole plantAndrea Di MuzioPublic domain

This source reports 6 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around September 26, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 25, 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 12 days to germinate.

86% germination in 2–12 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Dipsacus p. 133Public domain
Show the original text
Dipsacus (Dipsaceae). D. sylvestris germination was promoted by light, DS, a prior 3 m at 40, and outdoor treatment. Fresh seed germ. 70L(17% in 5-7 d), 70D(none), 40-70L(54% in 5-17 d), 40-70D(none), and 55% in March and April in outdoor treatment. Seed DS 6 m at 70 germ. 70L(86% in 2-12 d), 70D(33% in 2-12 d), 40-70L(16% in 6-10 d), and 40-70D(none).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Dipsacus p. 133. 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.

  1. Sow outdoors and leave it

    Up in March and April.

No stated waiting before sowing.

55% germination.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Dipsacus p. 133Public domain
Show the original text
Dipsacus (Dipsaceae). D. sylvestris germination was promoted by light, DS, a prior 3 m at 40, and outdoor treatment. Fresh seed germ. 70L(17% in 5-7 d), 70D(none), 40-70L(54% in 5-17 d), 40-70D(none), and 55% in March and April in outdoor treatment. Seed DS 6 m at 70 germ. 70L(86% in 2-12 d), 70D(33% in 2-12 d), 40-70L(16% in 6-10 d), and 40-70D(none).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Dipsacus p. 133. 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 September 21, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 20, 2026.

  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 6 months from start to sowing. Then 17 days to germinate.

54% germination in 5–17 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Dipsacus p. 133Public domain
Show the original text
Dipsacus (Dipsaceae). D. sylvestris germination was promoted by light, DS, a prior 3 m at 40, and outdoor treatment. Fresh seed germ. 70L(17% in 5-7 d), 70D(none), 40-70L(54% in 5-17 d), 40-70D(none), and 55% in March and April in outdoor treatment. Seed DS 6 m at 70 germ. 70L(86% in 2-12 d), 70D(33% in 2-12 d), 40-70L(16% in 6-10 d), and 40-70D(none).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Dipsacus p. 133. 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 Moderate Rated by us, not by the source.

Start around September 26, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 25, 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 12 days to germinate.

33% germination in 2–12 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Dipsacus p. 133Public domain
Show the original text
Dipsacus (Dipsaceae). D. sylvestris germination was promoted by light, DS, a prior 3 m at 40, and outdoor treatment. Fresh seed germ. 70L(17% in 5-7 d), 70D(none), 40-70L(54% in 5-17 d), 40-70D(none), and 55% in March and April in outdoor treatment. Seed DS 6 m at 70 germ. 70L(86% in 2-12 d), 70D(33% in 2-12 d), 40-70L(16% in 6-10 d), and 40-70D(none).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Dipsacus p. 133. 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 29, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 7 days to germinate.

17% germination in 5–7 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Dipsacus p. 133Public domain
Show the original text
Dipsacus (Dipsaceae). D. sylvestris germination was promoted by light, DS, a prior 3 m at 40, and outdoor treatment. Fresh seed germ. 70L(17% in 5-7 d), 70D(none), 40-70L(54% in 5-17 d), 40-70D(none), and 55% in March and April in outdoor treatment. Seed DS 6 m at 70 germ. 70L(86% in 2-12 d), 70D(33% in 2-12 d), 40-70L(16% in 6-10 d), and 40-70D(none).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Dipsacus p. 133. 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, 1993

Difficulty High Rated by us, not by the source.

Start around April 1, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 31, 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 Light: light

about 12 months from start to sowing. Then 10 days to germinate.

16% germination in 6–10 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Dipsacus p. 133Public domain
Show the original text
Dipsacus (Dipsaceae). D. sylvestris germination was promoted by light, DS, a prior 3 m at 40, and outdoor treatment. Fresh seed germ. 70L(17% in 5-7 d), 70D(none), 40-70L(54% in 5-17 d), 40-70D(none), and 55% in March and April in outdoor treatment. Seed DS 6 m at 70 germ. 70L(86% in 2-12 d), 70D(33% in 2-12 d), 40-70L(16% in 6-10 d), and 40-70D(none).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Dipsacus p. 133. 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.

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

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