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Pittosporum crassicaule

Family PittosporaceaeGenus Pittosporum

Small cream bell-shaped flowers with dark centers beside long, narrow drooping leaves
FlowerPictured: Pittosporum angustifolium, a relativeThomas MesaglioCC BY 4.0

About the plant

What it is and where it grows — not part of any germination protocol.

Flower
CreamRead from the photograph on this page
Native range
New Zealand SouthGBIF Backbone Taxonomy

Toxicity is noted only where a source states it. No note here is not a finding of safety.

Sources: Read from the photograph on this page — Deno's Garden; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

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

  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 12 months from start to step 5. Germination happens during step 5, in 14 days.

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 December 21, 2026 for a May 3 last frost. Too late for spring 2027 — that needed starting on December 20, 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 15 months from start to step 6. Germination happens during step 6, in 21 days.

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.

How each step is done, in Deno’s words, and what Verified and Derived mean.

Germination trials

Readers’ own records of sowing this species, published after review. Share your trial · All trials

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