Deno’s GardenMy Garden

Daphne genkwa

Lilac Daphne

Family ThymelaeaceaeGenus Daphne

Also published as Wikstroemia genkwa. You are in the right place.

Arching branches crowded with small lilac-pink tubular flowers
FlowerJeffdelongeCC BY-SA 3.0

About the plant

What it is and where it grows — not part of any germination protocol.

Habit
shrubPlants of the World Online
Flower
Lilac-pinkRead from the photograph on this page

Toxicity is noted only where a source states it. No note here is not a finding of safety.

Sources: Plants of the World Online — Royal Botanic Gardens, Kew; Read from the photograph on this page — Deno's Garden.

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

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

  1. Cold moist stratification

    Temperature: 40°F 4°C

Germination happens during step 1; time not stated, 21 days assumed.

23% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Daphne p. 129Public domain
Show the original text
Daphne (Thymelaceae). Germination.is stepwise with a time gap between splitting of the seed coat and development of the radicle although both may occur in the same cycle. Germination is further complicated by extended germination over several cycles and by rapid rotting of part of the seed on contact with moisture suggesting internal infection. Two of the most popular species ( D. genkwa, fresh seed germ. 70(4%)-40-70(3%)-40(2%) and 40(23%). No further germination occurred over five further cycles. Fresh seed from a year earlier germ. 40(5%)-70(17%)-40-70(5%). These results are not consistent, and in fact germination was generally erratic. Germination failed with seed DS 6 m at 40 or70
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Daphne p. 129. 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 December 15, 2026 for a May 3 last frost.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    5 germinated in this phase.

  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 germinated in this phase.

Steps after step 2 run on after germination.

about 3 months from start to step 2. Germination happens during step 2; time not stated, 21 days assumed.

17% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Daphne p. 129Public domain
Show the original text
Daphne (Thymelaceae). Germination.is stepwise with a time gap between splitting of the seed coat and development of the radicle although both may occur in the same cycle. Germination is further complicated by extended germination over several cycles and by rapid rotting of part of the seed on contact with moisture suggesting internal infection. Two of the most popular species ( D. genkwa, fresh seed germ. 70(4%)-40-70(3%)-40(2%) and 40(23%). No further germination occurred over five further cycles. Fresh seed from a year earlier germ. 40(5%)-70(17%)-40-70(5%). These results are not consistent, and in fact germination was generally erratic. Germination failed with seed DS 6 m at 40 or70
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Daphne p. 129. 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 March 15, 2027 for a May 3 last frost.

  1. Warm moist stratification

    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

    3 germinated in this phase.

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    2 germinated in this phase.

Steps after step 1 run on after germination.

Germination happens during step 1; time not stated, 21 days assumed.

4% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Daphne p. 129Public domain
Show the original text
Daphne (Thymelaceae). Germination.is stepwise with a time gap between splitting of the seed coat and development of the radicle although both may occur in the same cycle. Germination is further complicated by extended germination over several cycles and by rapid rotting of part of the seed on contact with moisture suggesting internal infection. Two of the most popular species ( D. genkwa, fresh seed germ. 70(4%)-40-70(3%)-40(2%) and 40(23%). No further germination occurred over five further cycles. Fresh seed from a year earlier germ. 40(5%)-70(17%)-40-70(5%). These results are not consistent, and in fact germination was generally erratic. Germination failed with seed DS 6 m at 40 or70
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Daphne p. 129. 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.

How each step is done, in Deno’s words, and what Verified and Derived mean.

Germination trials

Readers’ own records of sowing this species, published after review. Share your trial · All trials

Add to My Garden

View species page