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Liriodendron tulipifera

American Tuliptree · Bois-jaune · Canary Whitewood · Tuliptree

Family MagnoliaceaeGenus Liriodendron

A very tall broad tree in full golden autumn leaf against a clear blue sky, in open parkland
The whole plantJean-Pol GRANDMONTCC BY 3.0

About the plant

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

The plant

Habit
treePlants of the World Online
Habit
Perennial, TreePLANTS Database
Height
80-120 ft24-37 mExtension Gardener Plant Toolbox
Spread
30-60 ft9-18 mExtension Gardener Plant Toolbox
Flower
Gold/Yellow, Green, OrangeExtension Gardener Plant Toolbox
Blooms
Spring, SummerExtension Gardener Plant Toolbox
Native range
Canada, lower 48 statesPLANTS Database
Hardiness zones
4-9Extension Gardener Plant Toolbox

Growing conditions

Sun
Full sunExtension Gardener Plant Toolbox
Soil
Loam (Silt)Extension Gardener Plant Toolbox
Soil pH
Acid (<6.0)Extension Gardener Plant Toolbox
Moisture
Good Drainage, Moist, Occasionally DryExtension Gardener Plant Toolbox
Watering
Drought tolerance: LowPLANTS Database

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

Sources: Plants of the World Online — Royal Botanic Gardens, Kew; PLANTS Database — USDA NRCS; Extension Gardener Plant Toolbox — NC State Extension.

Worth knowing

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 12 months from start to step 5. Germination happens during step 5; 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
Show the original text
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.

Germination trials

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

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