Deno’s Garden

Cyclamen hederifolium

Genus Cyclamen

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around December 14, 2026 for a May 3 last frost. Too late for spring 2027 — that needed starting on December 13, 2025.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°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

about 15 months from start to sowing. Then 28 days to germinate.

90% germination in 28 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cyclamen p. 128Public domain
Show the original text
Cyclamen (Primulaceae). Germination is hypogeal with first formation of a corm and multiple branching root system followed after an interval of 1-2 m by emergence of a true leaf. C. neapolitanum had markedly different germination patterns for fresh seed and DS seed. Fresh seed germ. 70-40(25% in 3rd w)-70-40(50% in 5th w) and 40-70- 40-70-40(90% in 4th w). Seed DS at 70 or 40 germ. 70(75% in 11th w)-40(20% in 3rd w) and 40-70(15% in 12 th w)-40(60% in 12th w)-70. I y '2 129- -
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cyclamen p. 128. 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 March 7, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 6, 2026.

  1. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    25 germinated in this phase.

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 12 months from start to sowing. Then 35 days to germinate.

50% germination in 35 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cyclamen p. 128Public domain
Show the original text
Cyclamen (Primulaceae). Germination is hypogeal with first formation of a corm and multiple branching root system followed after an interval of 1-2 m by emergence of a true leaf. C. neapolitanum had markedly different germination patterns for fresh seed and DS seed. Fresh seed germ. 70-40(25% in 3rd w)-70-40(50% in 5th w) and 40-70- 40-70-40(90% in 4th w). Seed DS at 70 or 40 germ. 70(75% in 11th w)-40(20% in 3rd w) and 40-70(15% in 12 th w)-40(60% in 12th w)-70. I y '2 129- -
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cyclamen p. 128. 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.