Deno’s Garden

Clematis coactilis

Genus Clematis

Two sources report 4 treatments between them. All are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty High Rated by us, not by the source.

Start around October 20, 2026 for a May 3 last frost.

  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

    1/5 germinated in this phase.

Steps after step 1 run on after germination.

about 3 months from start to sowing. Then 77 days to germinate.

20% germination in 77 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Clematis p. 25Public domain
Show the original text
Clematis (Ranunculaceae). C. coactilis germ. 70D(1/5 in 11th w)-40- 70D(1/5 in 11th w), 70L(1/4 in 10th w), and 70 GA-3(all 4 rotted). The cotyledons opened a month after germination.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Clematis p. 25. 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, 1998

Difficulty High Rated by us, not by the source.

Start around January 25, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 70 days to germinate.

25% germination in 70 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Clematis p. 25Public domain
Show the original text
Clematis (Ranunculaceae). C. coactilis germ. 70D(1/5 in 11th w)-40- 70D(1/5 in 11th w), 70L(1/4 in 10th w), and 70 GA-3(all 4 rotted). The cotyledons opened a month after germination.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Clematis p. 25. 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 January 18, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 77 days to germinate.

33% germination in 77 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Clematis p. 31Public domain
Show the original text
Clematis (Ranunculaceae). C. coactilis germ. 70D(1/3 in 11th w) and 70L(1/4 in 10th w). All 4 rotted in 70 GA-3. The cotyledons are slow to expand and did not open completely until 4 w after germination.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Clematis p. 31. 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 High Rated by us, not by the source.

Start around January 25, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 70 days to germinate.

25% germination in 70 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Clematis p. 31Public domain
Show the original text
Clematis (Ranunculaceae). C. coactilis germ. 70D(1/3 in 11th w) and 70L(1/4 in 10th w). All 4 rotted in 70 GA-3. The cotyledons are slow to expand and did not open completely until 4 w after germination.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Clematis p. 31. 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.