Deno’s Garden

Asclepias cryptoceras

Genus Asclepias

This source reports 7 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty Low Rated by us, not by the source.

  1. Dry storage

    Duration: 90 daysTemperature: 70°F 21°C

  2. Sow outdoors and leave it

    Up in April.

about 3 months from start to sowing.

100% germination.

This source doesn't state how long.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Asclepias p. 23Public domain
Show the original text
Asclepias (Asclepiadaceae). A. cryptoceras germ. OT{5/8 in April), 70D(4/8 in 3rd w); and 40-70(6/7 in 1-3 d) using fresh seed. A second sample DS 3 m germ. OT(6/6 in April), 40-70(5/7 in 1-4 w), and 70-40-70-40-70(2/6 on 4th d), but after DS 6 m, it germ. 40-70(1/6 on 2nd d, rest rotted) and 70(all rotted) indicating that nearly all had died after 6 m DS.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Asclepias p. 23. 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, 1996

Difficulty Moderate Rated by us, not by the source.

Start around October 4, 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

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

86% germination in 1–3 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Asclepias p. 23Public domain
Show the original text
Asclepias (Asclepiadaceae). A. cryptoceras germ. OT{5/8 in April), 70D(4/8 in 3rd w); and 40-70(6/7 in 1-3 d) using fresh seed. A second sample DS 3 m germ. OT(6/6 in April), 40-70(5/7 in 1-4 w), and 70-40-70-40-70(2/6 on 4th d), but after DS 6 m, it germ. 40-70(1/6 on 2nd d, rest rotted) and 70(all rotted) indicating that nearly all had died after 6 m DS.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Asclepias p. 23. 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 Moderate Rated by us, not by the source.

Start around June 12, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 11, 2026.

  1. Dry storage

    Duration: 90 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

about 9 months from start to sowing. Then 28 days to germinate.

71% germination in 7–28 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Asclepias p. 23Public domain
Show the original text
Asclepias (Asclepiadaceae). A. cryptoceras germ. OT{5/8 in April), 70D(4/8 in 3rd w); and 40-70(6/7 in 1-3 d) using fresh seed. A second sample DS 3 m germ. OT(6/6 in April), 40-70(5/7 in 1-4 w), and 70-40-70-40-70(2/6 on 4th d), but after DS 6 m, it germ. 40-70(1/6 on 2nd d, rest rotted) and 70(all rotted) indicating that nearly all had died after 6 m DS.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Asclepias p. 23. 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 Moderate Rated by us, not by the source.

  1. Sow outdoors and leave it

    Up in April.

No stated waiting before sowing.

62% germination.

This source doesn't state how long.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Asclepias p. 23Public domain
Show the original text
Asclepias (Asclepiadaceae). A. cryptoceras germ. OT{5/8 in April), 70D(4/8 in 3rd w); and 40-70(6/7 in 1-3 d) using fresh seed. A second sample DS 3 m germ. OT(6/6 in April), 40-70(5/7 in 1-4 w), and 70-40-70-40-70(2/6 on 4th d), but after DS 6 m, it germ. 40-70(1/6 on 2nd d, rest rotted) and 70(all rotted) indicating that nearly all had died after 6 m DS.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Asclepias p. 23. 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 March 15, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 21 days to germinate.

50% germination in 21 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Asclepias p. 23Public domain
Show the original text
Asclepias (Asclepiadaceae). A. cryptoceras germ. OT{5/8 in April), 70D(4/8 in 3rd w); and 40-70(6/7 in 1-3 d) using fresh seed. A second sample DS 3 m germ. OT(6/6 in April), 40-70(5/7 in 1-4 w), and 70-40-70-40-70(2/6 on 4th d), but after DS 6 m, it germ. 40-70(1/6 on 2nd d, rest rotted) and 70(all rotted) indicating that nearly all had died after 6 m DS.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Asclepias p. 23. 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 High Rated by us, not by the source.

Start around October 9, 2026 for a May 3 last frost. Too late for spring 2027 — that needed starting on October 8, 2025.

  1. Dry storage

    Duration: 90 daysTemperature: 70°F 21°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  5. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  6. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 18 months from start to sowing. Then 4 days to germinate.

33% germination in 4 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Asclepias p. 23Public domain
Show the original text
Asclepias (Asclepiadaceae). A. cryptoceras germ. OT{5/8 in April), 70D(4/8 in 3rd w); and 40-70(6/7 in 1-3 d) using fresh seed. A second sample DS 3 m germ. OT(6/6 in April), 40-70(5/7 in 1-4 w), and 70-40-70-40-70(2/6 on 4th d), but after DS 6 m, it germ. 40-70(1/6 on 2nd d, rest rotted) and 70(all rotted) indicating that nearly all had died after 6 m DS.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Asclepias p. 23. 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 High Rated by us, not by the source.

Start around April 9, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on April 8, 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

about 12 months from start to sowing. Then 2 days to germinate.

17% germination in 2 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Asclepias p. 23Public domain
Show the original text
Asclepias (Asclepiadaceae). A. cryptoceras germ. OT{5/8 in April), 70D(4/8 in 3rd w); and 40-70(6/7 in 1-3 d) using fresh seed. A second sample DS 3 m germ. OT(6/6 in April), 40-70(5/7 in 1-4 w), and 70-40-70-40-70(2/6 on 4th d), but after DS 6 m, it germ. 40-70(1/6 on 2nd d, rest rotted) and 70(all rotted) indicating that nearly all had died after 6 m DS.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Asclepias p. 23. 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.