Deno’s Garden

Crocus tommasinianus

Genus Crocus

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 August 16, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on August 15, 2026.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 4 days

    Washed and cleaned daily for 4 days.

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 6 months from start to sowing. Then 49 days to germinate.

93% germination in 21–49 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Crocus p. 127Public domain
Show the original text
Crocus (lridaceae). . - C. tomasinianus seed was WC for 4 d to remove most of the aril. Germination was 70-40(93% in 3-7 w) and more extended in 40(60% in 8-10 w)-70-40(40% in 2-4 w). Germination is hypogeal. The seedlings must be kept at 40 for 3 m and until leaf growth is evident before shifting to 70.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Crocus p. 127. 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 October 23, 2026 for a May 3 last frost.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 4 days

    Washed and cleaned daily for 4 days.

  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

    40 germinated in this phase.

Steps after step 3 run on after germination.

about 3 months from start to sowing. Then 70 days to germinate.

60% germination in 56–70 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Crocus p. 127Public domain
Show the original text
Crocus (lridaceae). . - C. tomasinianus seed was WC for 4 d to remove most of the aril. Germination was 70-40(93% in 3-7 w) and more extended in 40(60% in 8-10 w)-70-40(40% in 2-4 w). Germination is hypogeal. The seedlings must be kept at 40 for 3 m and until leaf growth is evident before shifting to 70.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Crocus p. 127. 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.