Deno’s Garden

Hyacinthoides hispanica

Genus Hyacinthoides

This source reports 4 treatments. All are shown.

Protocol 1

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. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    7 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. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

Steps after step 3 run on after germination.

about 9 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, Scilla p. 212Public domain
Show the original text
Scilla (Liliaceae). S. campanulata germ. best in 70-40(60-75% in 3-11 w). Germination was the same for fresh seed or seed DS 6 m at 70 or 40. A prior 3 m at 40 not only gave lower germination, but germination extended over a cycles as shown by 40(7%)-70-40(70%)- 40 for fresh seed and 40(7%)-70(5%) for seed 05 6 m at 70 or 40.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Scilla p. 212. 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 July 23, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on July 22, 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 77 days to germinate.

60% germination in 21–77 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Scilla p. 212Public domain
Show the original text
Scilla (Liliaceae). S. campanulata germ. best in 70-40(60-75% in 3-11 w). Germination was the same for fresh seed or seed DS 6 m at 70 or 40. A prior 3 m at 40 not only gave lower germination, but germination extended over a cycles as shown by 40(7%)-70-40(70%)- 40 for fresh seed and 40(7%)-70(5%) for seed 05 6 m at 70 or 40.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Scilla p. 212. 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 Moderate Rated by us, not by the source.

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

  1. Cold moist stratification

    Temperature: 40°F 4°C

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

32% germination in 70 days.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Scilla p. 212Public domain
Show the original text
Scilla (Liliaceae). S. hispanica germ. best in 40(32% in 10th w) using fresh seed. Germination is hypogeal. The seedlings need to be kept at 40 for 1-2 m after germination and until the true leaf starts to emerge in order to get proper development on the shift to 70. Germination failed completely for fresh seed sown at 70 or for seed DS 6 m at 70 or 40 sown at either 70 or 40.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Scilla p. 212. 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 Very 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

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    5 germinated in this phase.

Steps after step 1 run on after germination.

about 3 months from start to sowing. Germination time not stated; 21 days assumed.

7% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Scilla p. 212Public domain
Show the original text
Scilla (Liliaceae). S. campanulata germ. best in 70-40(60-75% in 3-11 w). Germination was the same for fresh seed or seed DS 6 m at 70 or 40. A prior 3 m at 40 not only gave lower germination, but germination extended over a cycles as shown by 40(7%)-70-40(70%)- 40 for fresh seed and 40(7%)-70(5%) for seed 05 6 m at 70 or 40.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Scilla p. 212. 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.