Deno’s Garden

Liriodendron tulipifera

Genus Liriodendron

Protocol

DerivedN. C. Deno, 1996

Difficulty Very high Rated by us, not by the source.

  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 germinated in this phase.

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  5. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 15 months from start to sowing. Germination time not stated; 21 days assumed.

4% germination.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Liriodendron p. 54Public domain
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Liriodendron (Magnoliaceae). L. tulipifera germ. 70D-40-70D(2%)-40- 70(4%). This may be the optimum pattern for germination. The low percent germinations are largely if not completely due to the high percentage of empty seed coats that are not detectable from outer appearance.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Liriodendron p. 54. 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.