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Tulipa tarda

Late Tulip · Tardy Tulip

Family LiliaceaeGenus Tulipa

Also published as Tulipa urumiensis. You are in the right place.

Yellow star-shaped flowers opened flat, their six pointed tepals backed in green, among broad blue-green leaves.
FlowerBernd HaynoldCC BY 2.5

About the plant

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

Habit
bulbous geophytePlants of the World Online
Flower
WhiteOrnamental Plants From Russia And Adjacent States Of The Former Soviet Union

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; Ornamental Plants From Russia And Adjacent States Of The Former Soviet Union.

Worth knowing

  • The late tulip, also treated as Tulipa urumiensis, has yellow flowers with white tips and grows in rocky subalpine meadows in central Asia. It was given the RHS Award of Garden Merit in 1993. Wikipedia: Tulipa urumiensis

This source reports 5 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around June 19, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 18, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Cold moist stratification

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

    3 germinated in this phase.

  3. Warm moist stratification

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

about 9 months from start to step 3. Germination happens during step 3; time not stated, 21 days assumed.

75% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Tulipa p. 226Public domain
Show the original text
Tulipa (Llllaceae). Germination takes place either at 40 or after a 3 m period at 40: Preliminary results indicate that the seedlings must grow at low temperatures as a quick shift to 70 generally led to rotting starting at the tip of the radicle. Outdoor treatment needs to be tried not only for the germination but also for the cotyledon development. GA-3 probably has no effect in this genus. T. tarda germ. 40(3%)-70(75%) and 70-40(28%)-70(32%) using seed DS 6 m at 70. Another sample germ. 40(9%)-70(23%)-40(9%). Fresh seeds germ. 40(8%)- 70(1%)-40(6%) and 70-40(3%)-70(3%)-40(12%)-70(3%). Light had no effect on germination.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Tulipa p. 226. 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, 1993

Difficulty High Rated by us, not by the source.

Start around March 21, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 20, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  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

    28 germinated in this phase.

  4. Warm moist stratification

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

about 12 months from start to step 4. Germination happens during step 4; time not stated, 21 days assumed.

32% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Tulipa p. 226Public domain
Show the original text
Tulipa (Llllaceae). Germination takes place either at 40 or after a 3 m period at 40: Preliminary results indicate that the seedlings must grow at low temperatures as a quick shift to 70 generally led to rotting starting at the tip of the radicle. Outdoor treatment needs to be tried not only for the germination but also for the cotyledon development. GA-3 probably has no effect in this genus. T. tarda germ. 40(3%)-70(75%) and 70-40(28%)-70(32%) using seed DS 6 m at 70. Another sample germ. 40(9%)-70(23%)-40(9%). Fresh seeds germ. 40(8%)- 70(1%)-40(6%) and 70-40(3%)-70(3%)-40(12%)-70(3%). Light had no effect on germination.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Tulipa p. 226. 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 3

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around December 15, 2026 for a May 3 last frost.

  1. Cold moist stratification

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

    9 germinated in this phase.

  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

    9 germinated in this phase.

Steps after step 2 run on after germination.

about 3 months from start to step 2. Germination happens during step 2; time not stated, 21 days assumed.

23% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Tulipa p. 226Public domain
Show the original text
Tulipa (Llllaceae). Germination takes place either at 40 or after a 3 m period at 40: Preliminary results indicate that the seedlings must grow at low temperatures as a quick shift to 70 generally led to rotting starting at the tip of the radicle. Outdoor treatment needs to be tried not only for the germination but also for the cotyledon development. GA-3 probably has no effect in this genus. T. tarda germ. 40(3%)-70(75%) and 70-40(28%)-70(32%) using seed DS 6 m at 70. Another sample germ. 40(9%)-70(23%)-40(9%). Fresh seeds germ. 40(8%)- 70(1%)-40(6%) and 70-40(3%)-70(3%)-40(12%)-70(3%). Light had no effect on germination.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Tulipa p. 226. 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 4

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around June 19, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 18, 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 germinated in this phase.

  3. Warm moist stratification

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

    3 germinated in this phase.

  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

    3 germinated in this phase.

Steps after step 4 run on after germination.

about 9 months from start to step 4. Germination happens during step 4; time not stated, 21 days assumed.

12% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Tulipa p. 226Public domain
Show the original text
Tulipa (Llllaceae). Germination takes place either at 40 or after a 3 m period at 40: Preliminary results indicate that the seedlings must grow at low temperatures as a quick shift to 70 generally led to rotting starting at the tip of the radicle. Outdoor treatment needs to be tried not only for the germination but also for the cotyledon development. GA-3 probably has no effect in this genus. T. tarda germ. 40(3%)-70(75%) and 70-40(28%)-70(32%) using seed DS 6 m at 70. Another sample germ. 40(9%)-70(23%)-40(9%). Fresh seeds germ. 40(8%)- 70(1%)-40(6%) and 70-40(3%)-70(3%)-40(12%)-70(3%). Light had no effect on germination.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Tulipa p. 226. 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 5

DerivedN. C. Deno, 1993

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

Start around March 15, 2027 for a May 3 last frost.

  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

    1 germinated in this phase.

  3. Cold moist stratification

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

    6 germinated in this phase.

Steps after step 1 run on after germination.

Germination happens during step 1; time not stated, 21 days assumed.

8% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Tulipa p. 226Public domain
Show the original text
Tulipa (Llllaceae). Germination takes place either at 40 or after a 3 m period at 40: Preliminary results indicate that the seedlings must grow at low temperatures as a quick shift to 70 generally led to rotting starting at the tip of the radicle. Outdoor treatment needs to be tried not only for the germination but also for the cotyledon development. GA-3 probably has no effect in this genus. T. tarda germ. 40(3%)-70(75%) and 70-40(28%)-70(32%) using seed DS 6 m at 70. Another sample germ. 40(9%)-70(23%)-40(9%). Fresh seeds germ. 40(8%)- 70(1%)-40(6%) and 70-40(3%)-70(3%)-40(12%)-70(3%). Light had no effect on germination.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Tulipa p. 226. 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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