Deno’s Garden

Aster alpinus

Genus Aster

This source reports 4 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around March 22, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 14 days to germinate.

100% germination in 14 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Aster p. 104Public domain
Show the original text
Aster (Asteraceae). Nearly all species in this genus are D-70 germinators. The following were received as DS seed and germ. in 2-4 w at 70: A. alpinus germ. 70(100% in 2nd w) and 40(6%)-70(94% in 2 d-2w). Seed DS 6 m at 70 germ. 70(70%) and 40(55%)-70(2%). Seed DS 6 m at 40 germ. under 15%.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Aster p. 104. 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.

Start around October 5, 2026 for a May 3 last frost.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    6 germinated in this phase.

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 6 months from start to sowing. Then 2 days to germinate.

94% germination in 2 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Aster p. 104Public domain
Show the original text
Aster (Asteraceae). Nearly all species in this genus are D-70 germinators. The following were received as DS seed and germ. in 2-4 w at 70: A. alpinus germ. 70(100% in 2nd w) and 40(6%)-70(94% in 2 d-2w). Seed DS 6 m at 70 germ. 70(70%) and 40(55%)-70(2%). Seed DS 6 m at 40 germ. under 15%.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Aster p. 104. 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 Low Rated by us, not by the source.

Start around September 17, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 16, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C

about 6 months from start to sowing. Germination time not stated; 21 days assumed.

70% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Aster p. 104Public domain
Show the original text
Aster (Asteraceae). Nearly all species in this genus are D-70 germinators. The following were received as DS seed and germ. in 2-4 w at 70: A. alpinus germ. 70(100% in 2nd w) and 40(6%)-70(94% in 2 d-2w). Seed DS 6 m at 70 germ. 70(70%) and 40(55%)-70(2%). Seed DS 6 m at 40 germ. under 15%.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Aster p. 104. 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 June 19, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 18, 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

    2 germinated in this phase.

Steps after step 2 run on after germination.

about 9 months from start to sowing. Germination time not stated; 21 days assumed.

55% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Aster p. 104Public domain
Show the original text
Aster (Asteraceae). Nearly all species in this genus are D-70 germinators. The following were received as DS seed and germ. in 2-4 w at 70: A. alpinus germ. 70(100% in 2nd w) and 40(6%)-70(94% in 2 d-2w). Seed DS 6 m at 70 germ. 70(70%) and 40(55%)-70(2%). Seed DS 6 m at 40 germ. under 15%.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Aster p. 104. 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.