Deno’s Garden

Phalocallis coelestis

Genus Phalocallis

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty High Rated by us, not by the source.

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

  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

    2/9 germinated in this phase.

Steps after step 2 run on after germination.

about 6 months from start to sowing. Then 84 days to germinate.

67% germination in 84 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Cypella p. 36Public domain
Show the original text
Cypella (iridaceae). C. coelestis germ 70D-40(6/9 in 12th w)-70D(2/9 on 5th d) and 40(2/11 in 12th w)-70D-40-70D(2/11 in 2nd w).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Cypella p. 36. 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, 1996

Difficulty High Rated by us, not by the source.

Start around October 13, 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 Light: dark

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: dark

    2/11 germinated in this phase.

Steps after step 1 run on after germination.

about 3 months from start to sowing. Then 84 days to germinate.

18% germination in 84 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Cypella p. 36Public domain
Show the original text
Cypella (iridaceae). C. coelestis germ 70D-40(6/9 in 12th w)-70D(2/9 on 5th d) and 40(2/11 in 12th w)-70D-40-70D(2/11 in 2nd w).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Cypella p. 36. 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.