Deno’s Garden

Adonis vernalis

Genus Adonis

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

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

Start around December 14, 2026 for a May 3 last frost.

  1. Cold moist stratification

    Temperature: 40°F 4°C

No stated waiting before sowing. Then 112 days to germinate.

3% germination in 70–112 days.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Adonis p. 88Public domain
Show the original text
Adonis (Ranunculaceae). Adonis divides into two groups. A. vernalis gives a rare self sown seedling here. The two examples of germination to date were 40(3% in 10-16 w) with fresh seed and 70-40(1/41 in 8th w) in a sample DS 6 m at 70. Three samples were crushed and found to be 80%, 96%, and 98% empty seed coats.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Adonis p. 88. 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 February 8, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 56 days to germinate.

2% germination in 56 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Adonis p. 88Public domain
Show the original text
Adonis (Ranunculaceae). Adonis divides into two groups. A. vernalis gives a rare self sown seedling here. The two examples of germination to date were 40(3% in 10-16 w) with fresh seed and 70-40(1/41 in 8th w) in a sample DS 6 m at 70. Three samples were crushed and found to be 80%, 96%, and 98% empty seed coats.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Adonis p. 88. 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 August 13, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on August 12, 2026.

  1. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 6 months from start to sowing. Then 56 days to germinate.

2% germination in 56 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Adonis p. 88Public domain
Show the original text
Adonis (Ranunculaceae). Adonis divides into two groups. A. vernalis gives a rare self sown seedling here. The two examples of germination to date were 40(3% in 10-16 w) with fresh seed and 70-40(1/41 in 8th w) in a sample DS 6 m at 70. Three samples were crushed and found to be 80%, 96%, and 98% empty seed coats.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Adonis p. 88. 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.