Deno’s Garden

Anemonastrum protractum

Genus Anemonastrum

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around February 15, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 49 days to germinate.

50% germination in 35–49 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Anemonastrum p. 94Public domain
Show the original text
Anemonastrum (Ranunculaceae). A. protractum sown outdoors in May germ. the-following April. Only the two cotyledons develop the first year. A second sample of 8 seeds was divided. The loose brown seed coats were removed from 4 and these germ. 70(2/4 in 5-7 w) whereas the controls germ. 70D-40-70D(1/3 in 2nd w) and 40-70(1/10 in 5th w). The data is too meagre to draw the conclusion that the seed coat contains an inhibitor. A.. speciosum seed all rotted. -
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Anemonastrum p. 94. 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 26, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 25, 2026.

  1. Warm moist stratification

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

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

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

about 9 months from start to sowing. Then 14 days to germinate.

33% germination in 14 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Anemonastrum p. 94Public domain
Show the original text
Anemonastrum (Ranunculaceae). A. protractum sown outdoors in May germ. the-following April. Only the two cotyledons develop the first year. A second sample of 8 seeds was divided. The loose brown seed coats were removed from 4 and these germ. 70(2/4 in 5-7 w) whereas the controls germ. 70D-40-70D(1/3 in 2nd w) and 40-70(1/10 in 5th w). The data is too meagre to draw the conclusion that the seed coat contains an inhibitor. A.. speciosum seed all rotted. -
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Anemonastrum p. 94. 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 September 3, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 2, 2026.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 6 months from start to sowing. Then 35 days to germinate.

10% germination in 35 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Anemonastrum p. 94Public domain
Show the original text
Anemonastrum (Ranunculaceae). A. protractum sown outdoors in May germ. the-following April. Only the two cotyledons develop the first year. A second sample of 8 seeds was divided. The loose brown seed coats were removed from 4 and these germ. 70(2/4 in 5-7 w) whereas the controls germ. 70D-40-70D(1/3 in 2nd w) and 40-70(1/10 in 5th w). The data is too meagre to draw the conclusion that the seed coat contains an inhibitor. A.. speciosum seed all rotted. -
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Anemonastrum p. 94. 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.