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Trollius ledebourii

Ledebour Globeflower · Short-petal Globe-flower

Family RanunculaceaeGenus Trollius

Upright stems carrying orange globe flowers above deeply cut palmate leaves, in a rock garden beside a gravel path.
The whole plantLokal_ProfilCC BY-SA 3.0

About the plant

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

Habit
perennialPlants of the World Online
Flower
OrangeRead from the photograph on this page
Native range
Amur, Chita, Inner Mongolia, Khabarovsk, Korea, Manchuria and elsewhereGBIF Backbone Taxonomy

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

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

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

  1. Gibberellic acid soak

  2. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 21 days to germinate.

38% germination in 21 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Trollius p. 225Public domain
Show the original text
Trollius (Ranunculaceae). Nikolaeva (ref. 10) reported that several species had germination stimulated by GA-3. Robert and Brigitte Stewart and myself have confirmed these results with several species. However, the seedlings decline in vigor after producing a true leaf or two so that at present GA-3 cannot be recommended for the production of Trollius plants. T. ledebouri germ. 70 GA-3(38% in 3rd w), none in 700 or 70L, and 40-70(6%)- 40(16%). A prior 3 m at 40 or a prior 70-40 cycle had no effect on the germination in 70 GA-3. Seeds placed outdoors in October germ. 6% in November and 14% in April. The outdoor treatment is recommended, see general comments on .Trollius.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Trollius p. 225. 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 September 17, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 16, 2026.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    6 germinated in this phase.

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 6 months from start to step 3. Germination happens during step 3; time not stated, 21 days assumed.

16% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Trollius p. 225Public domain
Show the original text
Trollius (Ranunculaceae). Nikolaeva (ref. 10) reported that several species had germination stimulated by GA-3. Robert and Brigitte Stewart and myself have confirmed these results with several species. However, the seedlings decline in vigor after producing a true leaf or two so that at present GA-3 cannot be recommended for the production of Trollius plants. T. ledebouri germ. 70 GA-3(38% in 3rd w), none in 700 or 70L, and 40-70(6%)- 40(16%). A prior 3 m at 40 or a prior 70-40 cycle had no effect on the germination in 70 GA-3. Seeds placed outdoors in October germ. 6% in November and 14% in April. The outdoor treatment is recommended, see general comments on .Trollius.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Trollius p. 225. 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 Very high Rated by us, not by the source.

Sow around October 2027 — a date the source gives, not one counted back from a May 3 last frost. Too late for spring 2027 — that needed starting on October 2026.

  1. Sow outdoors and leave it

    Sown outdoors in October; up in November.

No stated waiting before sowing. Then 30 days to germinate.

6% germination in 30 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Trollius p. 225Public domain
Show the original text
Trollius (Ranunculaceae). Nikolaeva (ref. 10) reported that several species had germination stimulated by GA-3. Robert and Brigitte Stewart and myself have confirmed these results with several species. However, the seedlings decline in vigor after producing a true leaf or two so that at present GA-3 cannot be recommended for the production of Trollius plants. T. ledebouri germ. 70 GA-3(38% in 3rd w), none in 700 or 70L, and 40-70(6%)- 40(16%). A prior 3 m at 40 or a prior 70-40 cycle had no effect on the germination in 70 GA-3. Seeds placed outdoors in October germ. 6% in November and 14% in April. The outdoor treatment is recommended, see general comments on .Trollius.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Trollius p. 225. 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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