Deno’s Garden

Pittosporum crassicaule

Genus Pittosporum

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 December 28, 2026 for a May 3 last frost. Too late for spring 2027 — that needed starting on December 27, 2025.

  1. Warm moist stratification

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

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

  3. Warm moist stratification

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

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

  5. Warm moist stratification

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

  6. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

  7. Warm moist stratification

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

    20 germinated in this phase.

  8. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

  9. Warm moist stratification

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

    10 germinated in this phase.

  10. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

  11. Warm moist stratification

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

    10 germinated in this phase.

Steps after step 5 run on after germination.

about 15 months from start to sowing. Then 14 days to germinate.

30% germination in 14 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Pittosporum p. 66Public domain
Show the original text
Pittosporum (Pittosporaceae). P. crassicaule germ. 70-40-70-40-70(30% in 2nd w)-40-70(20%)-40-70(10%)-40-70(10%) and 40-70-40-70-40-70(20% in 3rd w). The two patterns are in accord. Light did not initiate germination, and GA-3 led to total rotting of the seed.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Pittosporum p. 66. 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 September 22, 2026 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 21, 2025.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

  2. Warm moist stratification

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

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

  4. Warm moist stratification

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

  5. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

  6. Warm moist stratification

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

about 18 months from start to sowing. Then 21 days to germinate.

20% germination in 21 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Pittosporum p. 66Public domain
Show the original text
Pittosporum (Pittosporaceae). P. crassicaule germ. 70-40-70-40-70(30% in 2nd w)-40-70(20%)-40-70(10%)-40-70(10%) and 40-70-40-70-40-70(20% in 3rd w). The two patterns are in accord. Light did not initiate germination, and GA-3 led to total rotting of the seed.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Pittosporum p. 66. 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.